S4·E6 Strange Justice

When his daughter is raped, long-standing, veteran Detective Slate is devastated, and shoots her attacker, who's been brought in for questioning. With the wounded rapist looking like he'll get off scott-free and Slate facing serious charges, the distinguished Lieutenant takes the law into his own hands to get even with his daughter's assailant - and it's up to Starsky and Hutch to stop him in time...