Plot summary
The body of Clarendon Pharmaceuticals company executive, Clayton Sherwood ( Darren Goldstein ) Head of Sales for Southeast Asia, is found chopped in half and stuffed in his suitcase which is being shipped back to Bangkok. In Thailand, Dr. Pirapan ( Pun Bandhu ) was treating an 8 year old with hemophilia who subsequently became infected with HIV which he suspected was from a tainted Clarendon Factor VIII batch and passed the information to Sherwood. Executives Bernard Mailer, Steve Johannsen and Sherwood decided that instead of destroying the batch of about $15 million of contaminated human plasma-derived product, they repackaged it with green labels to appear as a safe synthetic product and exported it to Thailand without informing CEO Gordon Buchanan ( Terry O'Quinn ).
Shepherd knew that Eric Dunlow ( Daniel Sauli ), Buchanan's administrative secretary, was a gay college yachtsman and tried to blackmail him into planting incriminating evidence on Buchanan’s computer to implicate him. However, Dunlow is actually Brian Welton who stole Dunlow's identity and he killed Shepherd to avoid being exposed as an imposter. Goren discovers Welton's identity theft through DNA analysis and eventually builds a strong enough case to prove Welton was the killer.
Credits
Adapted from Wikipedia contributors, Law & Order: Criminal Intent season 3. HTML formatting and reference markers removed.