Homicide: Life on the Street - Season 7 - Eps 21: The Why Chromosome
When the men are nowhere to be found, Sheppard and Ballard team up to investigate the death of young girl, who's a teenage gang member. With the wedding one week away, Billie Lou asks for Munch's help with her neighbor's abusive boyfriend. After Munch approaches him strongly, the boyfriend retaliates by coming to the Waterfront and slamming Billie Lou's head on the bar. Munch claims he came on strong with the guy, because his ""testosterone riddled behavior"" was due to the celibacy Billie Lou imposed on him, to make their wedding night more special. Billie Lou wants to delay the wedding until the welt on her forehead goes away in about 3 weeks. After Sheppard and Ballard solve their case, Sheppard reminds Lewis that his problem with her is not going to keep her from doing her job.
About Homicide: Life on the Street

Title: Homicide: Life on the Street
First Air Date: 1993-01-31
Last Air Date: 1999-05-21
Status: Ended
Rating: 8/10 (from 131 votes)
Language: EN
Seasons: 8
Total Episodes: 122
Network: NBC
Genres: Mystery, Drama, Crime
Production Companies: Baltimore Pictures, MCEG/Sterling Entertainment, NBC Studios, Reeves Entertainment Group
Synopsis
An American police procedural chronicling the work of a fictional version of the Baltimore Police Department's Homicide Unit.
Cast

Richard Belzer
John Munch

Giancarlo Esposito
Michael Giardello

Peter Gerety
Stuart Gharty

Clark Johnson
Meldrick Lewis

Yaphet Kotto
Al Giardello

Michael Michele
Rene Sheppard

Kyle Secor
Tim Bayliss

Jon Seda
Paul Falsone

Callie Thorne
Laura Ballard

Toni Lewis
Terri Stivers