Kate Mulgrew from “Star Trek: Voyager” has joined the cast of “Equus.” Mulgrew will star with Harry Potter star Daniel Radcliffe and Richard Griffiths in the revival of Peter Shaffer’s “Equus,” which opens Sept. 25 on Broadway.

Mulgrew is set to play a sympathetic magistrate who champions the case of a young man (Radcliffe) who blinds six horses.

Griffiths, who appeared with Radcliffe in a recent London production of the play, will portray a the character who investigates the incident.