Plot summary
Quantum scientist Dr. Carl Neminger ( Steve Routman ), dies in the street from radiation poisoning. The Major Case Squad investigates Neminger's relationship with his mentor, world-renowned and wheelchair-using physicist John Manotti ( Austin Pendleton ) and his controversial theory. They suspect that Manotti is being abused by his highly ambitious and much younger second wife Joanna ( Marla Sucharetza ), however Goren and Eames discover that Manotti has failed to prove the theory on which he had based his career. They uncover that Manotti killed Neminger to silence him and avoid the embarrassment of presenting his flawed theory at an upcoming international conference, and then played on his poor health and vulnerability to avoid suspicion.
Credits
Adapted from Wikipedia contributors, Law & Order: Criminal Intent season 4. HTML formatting and reference markers removed.