Law & Order: Special Victims Unit (1999)

Season 1: Episode 15

After a salesman is murdered, the detectives turn their attention to the youngest daughter of a well-known family with some deep connections. But as they join forces with the officers from the two-seven, they realize that their case is connected with a long-unsolved case that Briscoe once handled years ago with his former partner Mike Logan. The crossover continues in Law & Order S10E14 Entitled (II).