At the top of our list is Grantchester, which Netflix is streaming its first four and best seasons right now. Related: 39 Must-Watch British Crime Shows to Stream Right Now (May 2026) British crime shows are some of the best crime series you can watch. You can’t have a cozy murder mystery list without an Agatha Christie adaptation, and Why Didn’t They Ask Evans? ‘The Marlow Murder Club’ (2024–Present) – PBS Masterpiece on Prime VideoThe small English village of Marlow is quiet, quaint and too good to be real. Season 3 of The Marlow Murder Club starts streaming on September 6.