Description from the publisher:

In Hostage Negotiator: Crime Wave — a standalone expansion to the solitaire game Hostage Negotiator — each turn represents a conversation between you and a hostage taker. You play cards and roll dice to increase conversation points, decrease the threat level, and release hostages.

Hostage Negotiator: Crime Wave uses the same "hand-building" mechanism found in Hostage Negotiator that puts cards you purchase directly in your hand for next turn, but it features new Conversation Cards, new Terror Cards, new Pivotal Events, and ...