'Smallville' actress Erica Durance will guest star on 'Harry's Law' as Wonder Woman ... sort of.

According to TVLine, Durance will appear in a Season 2 episode of 'Harry's Law' as a "psychologically infirm" woman who thinks she's the DC Comics character. In her Wonder Woman persona, Durance's character seeks revenge on those who commit domestic abuse.

Durance will appear in the 11th episode of 'Harry's Law,' which does not have an airdate yet.

Audiences may recall NBC produced a pilot for a new Wonder Woman series from 'Harry's Law' creator David E. Kelley. The pilot never made it to series.

No word on whether Durance will don the iconic ensemble.

In other casting news ...