When the police are called to a house fire in June 2009, arson is quickly suspected. All four children in the Masud family are critically injured but daughters Maleha and Nabitha succumb to their injuries.

When 26-year-old Wendy Mann is discovered strangled in her own home in August 2015, the police immediately suspect her married lover.

A welfare check requested by two concerned grandkids on the 29th February 2004 results in the discovery of the badly decomposed bodies of Carolee and Duane Recob.

Teresa Sievers is discovered bludgeoned to death in her kitchen in June 2015.

The body of 88-year-old Henry Marrott is discovered in his own home in July 2002. He has been the victim of a vicious attack.

Ricardo Panagua and Kendra Hatcher are preparing for a romantic weekend getaway, when she is gunned down in the parking garage of her apartment block in September 2015.

A vulnerable teenager, Jayden Parkinson, is reported missing on the 4th December 2013. The police arrest her abusive ex-boyfriend, Ben Blakeley, on suspicion of murder.

The brutal murder on a suburban London street of Geeta Aulakh in November 2009 immediately led the police to suspect her estranged husband Sunny, but he had an alibi.

On the 29th December 1999, Garry Malone made an emotional TV appeal for his missing wife Sharon to make contact with the police. However, Garry already knew his wife wasn't coming home.

In San Francisco, April 1974, Angelo Pavageau broke into the home of Annette and Frank Carlson. He savagely murdered Frank, repeatedly raped and beat Annette, set the house on fire and left her for dead.