The Drop by Mick Herron (Omnibus)

When retired spy Solomon Dortmund sees an envelope pass from one hand to another in a bustling cafe, he knows he's witnessed more than an innocent encounter.

But by relaying his suspicions to his MI5 handler, he sets in train events which will alter lives.

Set in a snow-dusted London, Mick Herron's taut thriller takes place in the gap where old-style spy craft and modern intelligence analysis don't quite meet.

Omnibus of five parts abridged by Eileen Horne

Read by John Heffernan

Producer: Eilidh McCreadie

First broadcast on BBC Radio 4 in January 2020.