This was Jimmy Smits' last regular appearance as Bobby Simone.
After Kelly's resignation, Bobby Simone became Sipowicz's partner.
Bobby Simone was a fictional character in the television series NYPD Blue.
"We all cared for Bobby Simone," he added, referring to the character that had been played by Jimmy Smits on the television show.
Look at Bobby Simone's death on "N.Y.P.D. Blue" a few years back.
Sorenson was introduced in episode six of the sixth season as the 15th squad's replacement for the deceased Bobby Simone.
Each week two partners, detectives Andy Sipowicz and John Kelly (later replaced by Bobby Simone), are the central characters in the police drama.
Unlike Bobby Simone, Sorenson has issues the audience will come to know gradually.
It took a long time for the romance between Bobby Simone and Diane Russell to develop because - well, talk about baggage!
He is replaced by Bobby Simone, a widower whose previous job was that of driver for the Police Commissioner.