Lewis (Clark Johnson) and Crosetti (Jon Polito) run afoul of the Feds while investigating the murder of a Chinese student, who turns out to have been one of the leaders of the Tiananmen Square protest. Elsewhere, Munch (Richard Belzer) and Bolander (Ned Beatty) investigate when a body is found in the park; Howard's (Melissa Leo) testimony against sadistic drug dealer Pony Johnson (Geoffrey Ewing) may be inadmissible; and Pembleton (Yaphet Kotto) may get a promotion -- if anyone can find him. This episode marks the first appearance of Pembleton's wife Mary, played by Yaphet Kotto's real-life spouse, Ami Brabson. ~ Hal Erickson, Rovi