Sharon Stone joins Law & Order: SVU on April 28 as assistant district attorney Jo Marlowe, a former cop who shares a history with Stabler. 'She trained him when he was a rookie,' explains executive producer Neal Baer. 'He finds out she's the new ADA and goes, 'Oh, man.' In addition to possessing a wry sense of humor, Stone's prosecutor - who will stick around for four episodes - has a knack for saying 'the right wrong things,' notes Baer. 'She asks Benson if she's ever slept with Stabler. Benson's like, 'What? He's married.' Her response is, 'Yeah... so?'