Mariska Hargitay Mariska Hargitay

Det. Olivia Benson (Mariska Hargitay) is about to get a blast from the past — as in, it's coming back to haunt her.

On Wednesday's episode of Law & Order: SVU (10/9c on NBC), Bayard Ellis (Andre Braugher) returns when a man Olivia put away eight years ago for rape argues that he was never guilty, an argument buoyed by a recent copycat crime. In this exclusive clip, Olivia is convinced that the defendant just found someone else to do his dirty work, but Bayard isn't so sure.

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"Nine hours takes a toll on the detective as well as the defendant," he says.

Watch this exclusive sneak peek from Wednesday's episode:

Do you think Olivia charged the wrong guy? Or is this the work of an inmate desperate for freedom?

Law & Order: SVU airs Wednesdays at 10/9c on NBC.