Plot: A beach boy involved with a gang member's sister is suspected of murdering him. Mark investigates
![Cast and Crew in Diagnosis Murder - Season 4 - Episode 21 - Blood Brothers Murder Poster of Cast and Crew in Diagnosis Murder - Season 4 - Episode 21 - Blood Brothers Murder](http://es.actoragecheck.com/limage/L2JGMGtFeW5scDhoaWRsaHNoUDFrMGRjN3lJZy5qcGcAACh231.jpg)
Diagnosis Murder - Season 4 - Blood Brothers Murder (Episode 21)
Episode Aired On:
Thursday, April 10 1997
27 years ago
Thursday, April 10 1997
27 years ago