An Unexpected Killer Episode Rating Graph

When a young woman who was just starting out in life is found assaulted and stabbed to death in her boyfriend’s home, detectives work tirelessly to uncover a killer who had previously been above suspicion, leaving the town and police force stunned.

A beloved teacher and mother of four silently vanishes in the middle of the night. A blood-soaked bedroom and horrific lakeside discovery point police to a killer close to home until mysterious tracks in the mud lead to a culprit no one suspected

A fun-loving 59-year-old man is found shot to death in his home and his beloved jewelry collection has been stolen, leading detectives to a long list of suspects and a killer harboring a dark secret.

A restaurant is robbed and the night manager murdered leading police to investigate suspicious coworkers, a disgruntled ex-employee and a violent serial attacker. The case goes cold, but explosive new evidence leads to a killer nobody suspected.

In 1979 in Irvine, CA, detectives performing a welfare check discover the badly beaten body of a single young woman left bizarrely staged on her bed; fear in the community grows amid a rash of nearby murders until police are handed a break when a fresh look at old evidence points to the killer.

A loving, single mother of two is the victim of a bizarre murder, leading detectives to investigate a number of suspects, until a killer with a dark obsession hiding in plain sight is revealed.

When a popular college student is found slain in the middle of campus, police suspect his friends and lovers might be involved.

A cat-loving and recently divorced young woman dipping her toes back in the dating game is beaten and strangled in a brutal and unusual way; investigators dive into the murky world of online dating to hunt a killer who could be ready to strike again.

When a young mother is found dead in a field after a night out, police scour security video to retrace a suspect's steps; the discovery of a second crime scene leads to an arrest, before high-tech forensics reveal a truth no one expected.

Police in small town Louisiana investigate the mysterious and brutal murder of a beloved neighbor with no known enemies.

When a recently divorced mother is found strangled to death on her couch, several suspects emerge until the killer is revealed to be someone close to home.

When a trusting, young college student is viciously murdered and her apartment set ablaze, police untangle a web of relationships to find a killer who’s dangerously close to home.

When a young husband-to-be is found shot and stabbed, detectives investigate a secret affair, a kidnapping plot and a terrifying racist gang before unveiling a killer whose hidden criminal life leaves everyone stunned.

After a 35-year-old analyst for the NSA is fatally stabbed, police look at a number of suspects; detectives close in on the killer, but the investigation takes a shocking turn.

A glamorous 85-year-old millionaire is found stabbed in her basement, sending police on an international investigation that unearths devilish secrets, double lives and a killer no one saw coming whose tricks wouldn't stop even after their arrest.

A divorced mother of three is savagely stabbed to death while recovering from major surgery, but police are frustrated by a lack of evidence. After turning cold, the case is reignited by a startling admission that finally leads police to the killer.

When a young mother and beloved coworker is found savagely stabbed in her bedroom, investigators are unable to pin down a killer until secret recordings and evidence stashed in a van lead to a sinister plot and horrific confession.

After the burned body of a young nursing student is discovered near a rural road, detectives investigate several suspects until the trail of evidence unearths a disturbing and predatory plot.

When a family that runs a beloved vet clinic is gunned down, police investigate disgruntled tenants, a pet owner with an axe to grind and an estranged son. The case stalls until detectives uncover a twisted plot by someone who seemed above suspicion.

A devoted mother is stabbed to death in a horrifying attack and suspicion falls on those closest to her, but while a cryptic note and a violent crime spree baffle detectives at first, they eventually track down a deranged killer no one predicted.

When a loving father and beloved basketball coach is ruthlessly murdered in Tennessee, police decode a confusing array of evidence to unveil a killer who is shockingly close to home.

A recently retired woman is found murdered, and detectives struggle with a lack of evidence and try to track down a long list of suspects.

When an athletic and popular college student is violently murdered in her apartment, police track down several surprising suspects, including one with a disturbing obsession, before crucial evidence unmasks a dangerous predator no one saw coming.

When a beloved elderly woman is viciously murdered, detectives discover a chilling connection to another unsolved murder. The trail points to someone from her past and investigators race to hunt the killer down before they can strike again.

When a devoted mother with a bright future in show business is ruthlessly gunned down, a number of suspects emerge, but just as detectives think they have the killer in their sights, the investigation takes a jaw dropping turn.

A beautiful young woman is killed in her own bedroom and the evidence appears to point a clear suspect, but police soon discover not everything is as it seems. It takes 30 years and stunning new evidence to reveal a killer hiding in plain sight.

When an outgoing college student is gunned down, police investigate disapproving roommates, a psychic, and an infamous serial killer. However, decades-old evidence reveals a killer that original detectives had previously overlooked.

When a 98-year-old widow is found dead in her entryway closet, a chilling discovery leads investigators to a killer in the community who harbors a dark secret.