Ranked #3 of 4 in Season 4•−0.1 vs season avg
On the night that celebrated architect Rowan Jameson is to receive a lifetime achievement award, he's thrown to his death from a hotel balcony. Following a second murder in Cambridge, Max and his team uncover a conspiracy linking both victims.
Adrian Scarborough
DI Max Arnold
Vanessa Emme
DS Layla Walsh
Peter Bankolé
DC Connor Pollock
Lucy Phelps
DC Jess Lombard
Sophie Stone
Ashley Wilton
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"The Petrov Extension" is episode 4 of The Chelsea Detective season 4. It scored 7.7/10 from 232 votes, ranking #3 of 4 episodes this season (season average 7.8). It aired on August 24, 2026.
