Who's got time to think about murder when there's a wedding to plan?

It’s been a quiet year for the Thursday Murder Club. Joyce is busy with table plans and first dances. Elizabeth is grieving. Ron is dealing with family troubles, and Ibrahim is still providing therapy to his favorite criminal.

But when Elizabeth meets Nick, a wedding guest asking for her help, she finds the thrill of the chase is ignited once again. And when Nick disappears without a trace, his cagey business partner becomes the gang’s next stop. It seems the duo have something valuable—something worth killing for.

Joyce’s daughter, Joanna, jumps into the fray to help the gang as they seek answers: Has someone kidnapped Nick? And what’s this uncrackable code they keep hearing about? Plunged back into action once more, can the four friends solve the puzzle and a murder in time?