The Philadelphia homicide squad's lone female detective finds her calling when she is assigned cases that have never been solved. Detective Lilly Rush combines her natural instincts with the updated technology available today to bring about justice for all the victims she can.

Waking the Dead is a British television police procedural crime drama series produced by the BBC featuring a fictional Cold Case unit composed of CID police officers, a psychological profiler and a forensic scientist. A pilot episode aired in September 2000, and there have been a total of nine series since. Each story is split into two hour-long episodes, shown on consecutive nights on BBC One. A third series episode won an International Emmy Award in 2004. The programme was also shown on BBC America in the United States, though these screenings are edited to allow for advertising breaks, as well as UKTV in Australia and New Zealand and ABC1 in Australia. The show aired its final episode on 11 April 2011. A spin-off from the series, titled The Body Farm, revolving around forensic scientist Eve Lockhart, was announced by the BBC in January 2011 and ran for just one series.

'Unforgotten' follows modern police team DCI Cassie Stuart and DI Sunny Khan, who gradually unravel long-forgotten secrets which have a dramatic impact on their investigation and the four potential suspects. The slow revelation of the secrets will also affect the personal lives of both Sunny and Cassie.

Cold Squad is a Canadian police procedural television series first broadcast in 1998 that followed the investigations of a part of the Vancouver Police Department Homicide Division tasked with solving cold cases, the titular Cold Squad, as led by Sergeant Ali McCormick.

The cast of Cold Squad was diverse and changing, McCormick being the only character to appear in all 7 seasons. Some notable series regulars include Detective Tony Logozzo in seasons 1-2, Sgt. Frank Coscarella in seasons 3-4, Sgt. Len Harper in seasons 5-7, Insp. Vince Schneider season 1, Insp. Simon Ross season 2, Insp. Andrew Pawlachuk seasons 3-7, Det. Mickey Kollander seasons 3-6, Det. Nicco Sevallis seasons 3-6, Christine Wren seasons 4-7, as well as Det. Samantha Walters and Const. Ray Chase in season 7.

Between the second and third seasons, almost the entire on-screen cast other than Julie Stewart were replaced. This along with the new sets, a significant revamp of the credits and theme music, and even having McCormick's hair change from auburn to dirty-blonde all contributed to a considerable reworking of the series.

Explore compelling cases that have gone cold for years, chronicling the journeys of the detectives who reopened them. The detectives relive the events of the crimes, reveal new twists and startling revelations, relying on breakthroughs in forensic technology and the influence of social media to help crack these cases.

True-crime thriller that follows a team of homicide detectives as they open an 18-year-old cold case that occurred in one of America's notorious body-dumping grounds, the Louisiana swamplands.

Yuri Ishikawa and her team try to crack unresolved cold cases in Kanagawa Prefecture, Japan.

What if someone close to you suddenly disappeared without a trace? Days, months, then years pass and there's still no answer. Marie-Claude Barrette follows families and friends who have lost someone close to them in their quest to find out what happened.

A team of specialist detectives re-look at some of New Zealand’s most chilling unsolved murders.