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 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
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
The disappearance of a local lawyer paralyses a mountain town in Colorado. Soon clues emerge that the community's idyllic veneer is not all it seems. S1/Ep4
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
Lee disappeared one morning after leaving a friend. Had he gone into the wilds, or maybe joined the Israeli army? Follow the hunt for this troubled teen. S1/Ep1
When veteran Michael VanZandt vanishes, police suspect it's a random attacker. But his family are haunted by his thrill-seeking when considering his fate. S9/Ep12
When popular college student Martin Roberts goes missing, only a cryptic note is left behind. Two years on, his family want to solve the mystery once and for all. S9/Ep11
When Holly Cantrell never returns home after work, her three sons are distraught. But Holly harboured a web of secrets that may have led to her disappearance. S9/Ep9
When Tyarra Williams vanishes, tips suggest she may have fallen prey to human trafficking. Does someone in the community know more than they're letting on? S9/Ep7
In 1998, 23-year-old Amy Bradley goes on a family cruise through the Caribbean. After a night out dancing in the ship's disco, she vanishes without a trace. S9/Ep5
19-year-old Logan Schiendelman vanishes after a night out. When authorities find no evidence of foul play, they are forced to examine his family's controversial past. S9/Ep2
35-year-old mum Deanne Hastings leaves a note that she's running to the store, but never returns. As detectives find more information, troubling theories emerge. S8/Ep13
A couple vanishes after a date and their families unite to locate them. But will their growing desperation and accusations sunder the investigation? S8/Ep11
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
38-year-old Erick Franks gets life-changing news and drops everything to start a new life. But he never calls home again - and police struggle for answers. S8/Ep9
When a bible-teacher mum disappears from her family's farm, investigators must decipher a cryptic handwritten note. A walk in the woods uncovers a mysterious skull. S8/Ep8
When 17-year-old Macin Smith doesn't return from school, his parents fear he is in danger and a note hidden in his wallet leaves his family troubled. What happened? S8/Ep7
19-year-old Angel Garcia disappears after riding his dirt bike. Friends say he was chased by an SUV before he vanished. Months later, a possible sighting raises hopes. S8/Ep6
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
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
A dedicated mother's blood-stained minivan is found abandoned at a roadside at Christmas. Where is Patty, and what does her ex-husband know about her disappearance? S3/Ep39
Firefighter Brandy Hall's abandoned and blood-stained truck is found submerged in a local pond. What happened to this popular mum and where is she now? S3/Ep38
When rebellious teen Samantha Bonnell goes missing, her co-workers claim she just walked out of a cinema and vanished. Are they telling the truth? S3/Ep37
Susie, Stacey and her mum go missing from their home in the middle of the night. Is their disappearance linked to the activities of a serial sexual predator? S3/Ep36
When high-profile DA Ray Gricar goes missing, his laptop and hard drive are found destroyed in the Susquehanna River. Was Ray murdered, or is he on the run? S3/Ep35
After the death of her parents, undergrad student Leah drops out of college and hits the road, leaving a cryptic note for her friends and siblings. Where is she now? S3/Ep34
Free spirit Jeremy is convinced that 'bad men' are out to get him. Is he suffering paranoid delusions or has he run into trouble, and where is he now? S3/Ep32
Friends call cops to help them find Toni, who vanished after mixing alcohol with her bi-polar meds on a night out. But is their search about to take a dark turn? S3/Ep31
Big-hearted Patti clocks out at the end of her shift at the factory and is never seen again. What happened to this popular mum and is a mystery man involved? S3/Ep30
An avid scuba diver, Ben McDaniel vanished while exploring a cave and was never seen again. Why do the rescue divers who searched for him believe he was murdered? 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
After a violent argument with her boyfriend, Roxanne vanishes. What was she doing in an area infamous for drugs and prostitution and where is she now? S3/Ep29
Why would a happy family enjoying life in suburban California abandon their pets, home and cash to secretly head into Mexico? Friends search for the McStays. S3/Ep27
Jeremy is planning for the hunting season when he texts his wife to tell her he is leaving her and their baby. When his car is found torched, she fears foul play. S2/Ep26
Tom is desperate about his wife's disappearance but when her boss voices doubts about his character to police he falls under suspicion. Can phone records solve the case? S2/Ep25
Bradyn's parents panic when they can't reach him, and their alarm increases when they realise he's stolen a handgun. What is he running from and where is he heading? S2/Ep24
Liz and John vanish after meeting with their accountant who they suspect of embezzling funds from their yachting resort. Could he be responsible for their disappearance? S2/Ep23
Bobby and Sherilyn go missing in Oklahoma backcountry with their little girl, leaving their dog abandoned in the car. Is the family lost or is this a murder-suicide? S2/Ep22