College student Bryce is driving to visit his parents, but his car is later found crashed and abandoned in a remote California park. What happened to him? S7/Ep1
An artist disappears on her way home from work. When her car is found abandoned in a parking lot, it sets off a dark speculation about her disappearance. S7/Ep3
Brian, a 25-year-old BMX rider, is last seen wandering a field. Have Brian's risky bike moves led to a severe state of confusion and his disappearance? S7/Ep4
Days after Jennifer Kesse goes missing, her car is found abandoned near her home. A decade later her disappearance remains one of Florida's most baffling crimes. S7/Ep5
Brandy leaves work Friday afternoon for a weekend off. But on Monday morning she doesn't show up for work. Did she walk away from her rocky love life? S7/Ep6
Colleen sails into the sunset with her boyfriend Jean Paul on his luxury yacht - and is never heard from again. Has she fallen foul of her shifty lover's quick temper? S5/Ep85
When popular park ranger Randy goes missing in the Sierra Nevada Mountains his colleagues work tirelessly to locate him. But will Randy be found alive? S5/Ep84
Competitive runner Amy goes jogging in the mountains and never returns home. Where is Amy, and what does her jealous husband know about her disappearance? S5/Ep82
When hundreds of exotic birds are found dying at a reputable aviary, breeders Lilah and Moses are nowhere to be seen. Did they leave their land willingly? S5/Ep81
In the years following the disappearance of two sixteen-year-old girls, two serial killers separately confess to the murders. Are they toying with police? S5/Ep80
A teenage boy runs away after a fight with his grandma; years later a disorientated young man with amnesia is taken in by concerned strangers. Is this Jarrod? S5/Ep79
A young bellhop goes missing on a treasure hunting trip in the Arizona wilderness. Will rescuers find Jesse or is he another victim of the Dutchman's Curse? S5/Ep78
Tracey Ocasio is missing and when one of her boots is found in woodland detectives fear the worst. Is the vicious assault of another young woman connected to her case? S5/Ep76
Bethany is pregnant with her lover's baby when she goes missing. Police speak to her cuckolded husband and her new lover; but are they both telling the truth? S5/Ep75
Matrice is arrested when she can't pay her restaurant bill; but after cops release her into the night without her car, keys, or cash, she disappears. Where is she? S5/Ep74
Big game hunter Bob is fooled by a predatory con artist and puts a $1000 deposit on a non-existent Thunderbird; but will his search for his money end well? S5/Ep73
A young woman visits her boyfriend Risa in New York and is not heard from again. Risa tells her worried family that she left him; but is he telling the truth? S5/Ep72
After a 59 year separation Bob and Fontelle marry following a whirlwind reunion. But two days before Fontelle relocates to California Bob disappears - where is he? S5/Ep71
Frightened that his ex-boyfriend will attack him, Billy ups his security and changes his locks; weeks later he disappears, and so does his cash. Where is Billy? S5/Ep70
Three years after a young mum loses custody of her kids and quits New Orleans, her ex-landlady begins to fear for her safety. What happened to Dana? S5/Ep69
An unassuming teen disappears after becoming involved with an attractive young mum struggling in a difficult relationship. Where is he now and what is Misty hiding? S5/Ep68
Clinton has a heart condition, is worried about a narcotics charge, and is unsure if he's about to be a dad when he disappears. Has he run away - or come to harm? S4/Ep62
Single mum Susan worked as a journalist by day and as a stripper by night. Now she is missing - has she been targeted for her articles on the sex industry? S4/Ep59
Amber Gerwick's parents fear the worst when her car is found abandoned 600 miles from her Michigan home. Is the missing-mum-of-four alive - and will they find her? S4/Ep58
Young mum-of-three Margaret was known as a heroic firewoman who couldn't control her quick temper. But after a row with her husband she disappears - what happened? S4/Ep57
When Brianna vanishes in a notorious drug hotspot after dropping out of high school, police fear the beautiful teen was abducted. Are rumours of murder founded? S4/Ep56
Is the disappearance of devoted wife and mum, Pat Viola, related to a triple murder in suburban New Jersey? A decade after the case goes cold, detectives find out. S4/Ep55
Allison Foy goes missing after a night out with friends. Did she leave her kids to escape her stormy marriage, or was she abducted by a predator? S4/Ep54
After Felipe Santos is caught driving illegally he vanishes. When another man goes missing, police are suspicious. Is one of their officers involved? S4/Ep53
When Amy disappears, police have a suspect but no crime scene, no body and no evidence. It takes an unexpected informant to blow the case wide open. S1/Ep11
A blues guitarist vanishes, leaving few clues to his whereabouts. The case goes cold, until a series of events thrusts it back into the limelight. S1/Ep10
Colleen sails into the sunset with her boyfriend Jean Paul on his luxury yacht - and is never heard from again. Has she fallen foul of her shifty lover's quick temper? S5/Ep85
A young woman on the brink of starting her dream job disappears, and it's down to forensic officers to gather the clues that may lead to her whereabouts. S1/Ep8
When popular park ranger Randy goes missing in the Sierra Nevada Mountains his colleagues work tirelessly to locate him. But will Randy be found alive? S5/Ep84
Billy disappears just after finding out his girlfriend is cheating on him. Is she behind it, or will a perpetrator emerge from beyond the grave? S1/Ep5
In the years following the disappearance of two sixteen-year-old girls, two serial killers separately confess to the murders. Are they toying with police? S5/Ep80
A teenage boy runs away after a fight with his grandma; years later a disorientated young man with amnesia is taken in by concerned strangers. Is this Jarrod? S5/Ep79
Aspiring actress Satara is hooked on heroin and in an abusive relationship with a suspected human trafficker when she goes missing. Where is she now? S5/Ep77
Tracey Ocasio is missing and when one of her boots is found in woodland detectives fear the worst. Is the vicious assault of another young woman connected to her case? S5/Ep76
Bethany is pregnant with her lover's baby when she goes missing. Police speak to her cuckolded husband and her new lover; but are they both telling the truth? S5/Ep75
Street-smart urbanite Shannon goes missing on the remote southern shores of Long Island after making a desperate emergency call. What happened to her? S5/Ep67
When Alexis reports his ex-girlfriend missing, police tell him her house burned down that morning, and that his son died in the blaze. But where is Joey Lynn? S4/Ep65
When 19-year-old Computer Science student Suzy doesn't return home after work, her boyfriend raises the alarm. What happened to Suzy, and will she ever be found? S4/Ep64
Police believe Ben McDaniel disappeared during a cave dive. But the best divers search for his body and cannot find it. Baffled, investigators start questioning his disappearance. S4/Ep63
Clinton has a heart condition, is worried about a narcotics charge, and is unsure if he's about to be a dad when he disappears. Has he run away - or come to harm? S4/Ep62
Recovering drug addict Danice Day disappears, leaving her two young children behind. Did the pressure of sobriety become too much, or has someone harmed her? S4/Ep45
Susan Walsh was a reporter by day, stripper by night. When she disappears, investigators do not know where to begin. But her loved ones insist that she would never leave her son. S4/Ep59
Student Charlie Allen is due to meet a friend but never shows up. The day he disappears, he tells his sister people are after him. But is Charlie truly in any danger? S4/Ep43
When Jamie Fraley vanishes from her apartment, detectives suspect her boyfriend's obsessive father is involved. However, a grim discovery changes the course of the investigation. S4/Ep51
Morgan Harrington is separated from her friends at a rock concert and lost. Clues lead nowhere, until a forensic team links the case to a separate violent crime. S4/Ep42
Ginni Wood loses contact with her mother while on a road trip to visit her best friend in Texas. The mystery deepens when the best friend goes missing as well. S4/Ep50