From publisher blurb: Welcome to the Whispers of Death Companion. This product is designed to supplement Whispers of Death: A Sourcebook for Assassin Characters. If you do not own this book, a lot of the content in this supplement will be of no use. This supplement contains a few things that were left out of Whispers of Death, particularly new rules for poisons. This supplement also contains an example assassin encounter as well as a variant on the rules to compensating assassin characters for jobs.