Chris Noth will return to Law & Order, this time appearing as a regular character starting next season with a new partner on L&O: Criminal Intent. Noth will return as Detective Mike Logan, joining the major case squad, and splitting the case load with the current (and returning) Detective Robert Goren as played by Vincent D'Onofrio (who continues to work with his long time partner). Basically, no one is getting displaced here, they're just adding a new pair of detectives to the squad.
its like watching pacino & deniro in the same role. what wonderful handsomeness on one show!
but one scene for our legendary lennie briscoe that det mike logan goes to visit his old sidekick's grave and talking to him like if he were still alive, now here is where noth should step in and make a sarcastic joke like lennie use to. and remind him "i will continue to take the scum off the streets as long as you are my guardian angel.