Part One

E1

A serial killer has begun murdering bank managers. BBC radio crime correspondent George Cragge gets involved after fielding calls from the killer while broadcasting on Radio 4.

Part Two

E2

After murdering an MP in the House of Commons, the killer makes a veiled threat to Cragge on air.

Part Three

E3

The mysterious Andrew James is "fast-tracked" to an Old Bailey trial for the Bank Manager murders.