<P> Transfers to Hill Street in Season 7 . Turned in his partner, an old friend of Lieutenant Buntz, earning his enmity . Romantically linked with Sgt . Bates and, later, Grace Gardner . </P> <Dl> <Dt> Officer Tina Russo (Megan Gallagher, 1986--87) </Dt> </Dl> <Dt> Officer Tina Russo (Megan Gallagher, 1986--87) </Dt> <P> Transfers to Hill Street in Season 7 . Works undercover and is accused of exchanging sexual favors for information . Mentored by Belker . </P>

Who played the captain on hill street blues