If there is any one show that can claim long-running success with a ever-changing cast of characters, it's NBC's Law & Order. For example, during its 16-year run (which will become 17 years starting next fall), the Assistant District Attorney's second-chair slot, which actor Richard Brooks left back in 1993, has been filled by five individuals: Jill Hennessy, Carey Lowell, Angie Harmon, Elisabeth Rohm (who departed earlier this last season) and Annie Parisse as current ADA Alexandra Borgia. Doctor Who didn't even regenerate this much in so little time!

Well, it looks like Parisee may be heading out the door this season, according to Zap2it. Of course, NBC is keeping mum about this rumored departure in order to maximize its ratings during May sweeps. The only mention of the final episode involves Borgia's boss, ADA Jack McCoy (Sam Waterson), who risks everything in order to nab two vicious criminals.

Parisee's Borgia replaced Rohm's Serena Southerlyn earlier this season when she was let go from the DA's office. In a bit of a departure from the L&O formula, which rarely steeps into a character's background, Southerlyn asked if she was let go because she was a lesbian. Who would replace Borgia? Well, if Conviction isn't renewed, there will be a whole mess of new ADA's to choose from. Maybe McCoy can team up with Alexandra Cabot (Stephanie March).