The true crime documentary series returns with an examination of the 2018 murder of Jessica Patel. Her husband, pharmacist Mitesh, called police to say he had returned home to find his wife murdered - but it was all a lie.
An examination of the events leading up to the death of Natalie Jarvis in 2012, who was murdered by Adam Whelehan, a man with whom she had been having a casual relationship but who had been ridiculing her to his friends.
Alethea Taylor, a retired schoolteacher went missing in 2012 and her body has never been found. Her undertaker husband John was eventually convicted of killing her.
This edition looks at the extraordinary case of Carole Waugh, who fell for a lethal conman and gambling addict who claimed to be a doctor, but had more than 40 convictions for fraud. Rakhesh Bhayani took her money then her life.
The events leading up to the death of Penny Beale in November 2001. Her boyfriend, Michael Moffat claimed she had fallen down the stairs while drunk - but her mother (also called Penny Beale) knew otherwise.
The final documentary in the third series looks at the case of Janet Scott, who was murdered by her former partner, Simon Mellors - a man who had been hiding a dark and violent secret from his past.