From zap2it: Third Watch : The Price of Nobility (Crime) Cruz and Bosco are on a collision course with their informant. TV14 CC Stereo
But... I think tvguide.com gives the best. DO NOT READ IF YOU DON'T WANT TO KNOW WHO SURVIVES!!!
After receiving a tip from Noble, Cruz and Bosco pursue a drug dealer, and a high-speed car chase ends in a fiery crash. When emergency personnel respond to the scene, there's a sudden explosion, which claims the life of one of their own. Afterward, a troubled Bosco enlists Yokas's help in exposing the cover-up involving Noble, but his scheme backfires, leaving four more lives in jeopardy. Veronica Hamel returns as Beth Taylor, Alex's mother. Johnson: John Michael Bolger. Rita Devore: Isabel Glasser.
May I say: Phew! Bosco's safe. Also, damnit, Alex is dead. Why else would Veronica Hamel be back??