Kent, Gran Bretagna. In una tranquilla e lussuosa casa di riposo quattro improbabili amici si incontrano una volta alla settimana per indagare sui casi di omicidi irrisolti. Elizabeth, Joyce, Ibrahim e Ron, tra calici di vino e torte alla vodka, studiano i fascicoli della polizia segretamente acquisiti dalla leader indiscussa del gruppo, Elizabeth. Ma quando un brutale omicidio ha luogo proprio sulla loro soglia di casa, "Il club dei delitti del giovedì"...

"In a peaceful retirement village, four unlikely friends meet weekly in the Jigsaw Room to discuss unsolved crimes; together they call themselves The Thursday Murder Club. There's Red Ron, the infamous former socialist firebrand, still causing trouble; gentle Joyce, widowed, pining for another resident, but surely not as innocent as she seems; Ibrahim, a former therapist who understands the darker side of human nature; and Elizabeth? Well, no one...

"It's the following Thursday. Elizabeth has received a letter from an old colleague, a man with whom she has a long history. He's made a big mistake and he needs her help. His story involves stolen diamonds, a violent mobster and a very real threat to his life. As bodies start piling up, Elizabeth enlists Joyce, Ibrahim and Ron in the hunt for a ruthless murderer. And if they find the diamonds too? Well, wouldn't that be a bonus? But this time they...

"When a dangerous package goes missing on Boxing Day, the Thursday Murder Club, when one of their own is murdered, take on their most deadly opponents yet."--