And I should add...well acted, believable script and great locations. I love to see the more mature actors being given roles into which they can get their teeth. This really should be renewed and be a regular feature. I would say that everything about it was a delight and, truthfully, the plot strands came together convincingly and with no strain. Each character had enough backstory to make them well rounded without it ever being intrusive and disruptive of the main narrative. I also love the blend of comedy and thrills. I can't grasp how people criticise "shifts in tone " like it's a bad thing. This pulls it off admirably.