Pierce, Walter J.
Starfleet engineer. In 2362, Pierce murdered his girlfriend and her lover in a jealous rage. He later committed suicide in the plasma stream of the U.S.S. Enterprise NCC-1701-D. Due to the fact that Pierce had a Betazoid maternal grandmother, he left empathic traces within the Enterprise's warp nacelle control room that compelled others with empathic abilities to also commit suicide.