Mervin and the team explore the world of online dating when a local man is shot dead at his villa. He was waiting for a woman he'd met on an app when their video call was interrupted by an intruder. But Mervin's puzzled by the presence of a bullet in the victim's hand: why would the killer have put it there? The team must uncover lies, deceit and the lengths people go to for love in order to crack this case.

Meanwhile, a new colleague makes an impression for all the wrong reasons, and Mervin's like a dog with a bone as he reopens his mother's case, catching the attention of a suspicious figure...

Mervin is about to fly home but finds himself at the centre of a murder investigation when a body is discovered in his shack. As Mervin professes his innocence, the team can't work out how the victim ended up inside a locked building with no sign of forced entry. The woman's identity remains elusive until they discover she was volunteering at a local turtle conservation charity, and suspicion falls on her colleagues. Meanwhile, Selwyn grapples with his most difficult decision yet when he delivers some personal news to Mervin that turns everything on its head.