Empty envelopes are delivered to top Government officials, who are then found dead. The only clue is that each man seems to have died from a fit of sneezing.
Gina helps an old flame who has gone AWOL from the army. Greengrass arranges a gourmet dinner at the pub.
When four directors of a large business die in mysterious circumstances, Simon finds himself investigating a fiendishly clever murder market - and racing against time to save the life of a fifth director.
A mock murder leads the Avengers to a gang of blackmailers.
The sheriff forces an innkeeper to sell his tavern.
