Joan Cusack to Guest on 'Law & Order: SVU'

Detectives Stabler and Benson better brace themselves, because there's an A-list suspect who's about to make their list. Joan Cusack is set to guest star on 'Law & Order: SVU,' according to OMG.

The two-time Oscar nominee will play the mother of a girl who had gone missing years before. But when a second daughter disappears, her story suddenly seems questionable -- and she becomes the center of the detectives' investigation.

Cusack's turn on 'SVU' is only the latest surprise appearance for the versatile actress. This summer she was on the big screen (virtually, at least), as the voice of Jessie, the upbeat cowgirl in 'Toy Story 3.' In the past, she's appeared in a diverse range of films and shows, including the crowd-pleaser 'Confessions of a Shopaholic' (2009) and Nicole Holofcener's 2006 indie dramedy, 'Friends With Money.'

And as for how long her stint lasts on 'SVU'? That depends on handy detective work.