Interestingly, the episode’s title “Murder on the Saint Marie Express” is a nod to Agatha Christie’s Murder on the Orient Express , fitting for a show that champions classic whodunit mechanics.

So skip the malware-ridden file search. Brew some tea (even if it’s iced). Open BBC iPlayer or BritBox. And enjoy the murder on Saint Marie.

: A feisty local detective (Sara Martins) who often clashes with Richard's rigid methods but develops a strong working partnership and underlying romantic tension with him.

From the premiere episode's shocking twist to the introduction of Catherine’s Bar

: Every episode in the "01all" collection follows a classic whodunit structure, often featuring impossible crimes that require intense logical deduction.