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
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
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
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
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
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
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 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
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
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
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
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
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
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
After Tim goes missing his car is abandoned at a construction site and his bank account is emptied. Is his disappearance connected to a strict religious group? S2/Ep21
A month after 17-year-old Kara goes missing, Kelsey is abducted in a car park. When a body is discovered by a lake, two families are locked in a grim waiting game. S2/Ep18
Popular teacher and beauty queen Tara is missing. The only clue is an abandoned latex glove found in her backyard. Is an unstable male student involved? S2/Ep16
John, a happily married financial officer, has gone missing. Did the pressure of an audit drive him over the edge, or has something sinister happened? S2/Ep14
A basketball star and his girlfriend disappear while sailing. Can investigators track down his brother, who's the only person who may know what happened? S1/Ep12
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
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
Two years after Ali Lowizter vanishes, police receive a tip that she may have been trafficked. The search turns into a rescue mission but will it bring Ali home? S9/Ep10
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
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
Eight-year old Zachary Bernhardt disappears from his Florida home late at night while his mum is out. When another boy goes missing, new theories emerge. S8/Ep12
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
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
21-year-old Kortne Stouffer vanishes from her bed one night after rowing with neighbours and friends. Investigators pursue various leads, but she cannot be found. S8/Ep3
A beautiful young woman moves to the US for a new opportunity, but within weeks she vanishes without a trace. Kidnapping survivor, Elizabeth Smart, joins in the search. S8/Ep2
John, a happily married financial officer, has gone missing. Did the pressure of an audit drive him over the edge, or has something sinister happened? S2/Ep14
A basketball star and his girlfriend disappear while sailing. Can investigators track down his brother, who's the only person who may know what happened? S1/Ep12
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
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
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 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 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