Richard Allen Cripps & Stuart Cripps (from Congleton) - guilty of witness tampering in Tracey Mertens murder. Richard Cripps guilty of three counts/thre separate incidents of witness tampering - 1. intimidation of a witness to prevent witness from coming forward as a witness to police. 2. beibg party to a conspiracy to abduct and murder a witness. 3. being party to an attempt to abduct and murder a witness. Stuart Cripps guilty of one count of witnes tampering - 1. Doing an act (in person) that intimidates a witness.