John Stamos, Terrence Howard to Guest Star on 'Law & Order: SVU'

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John Stamos, left, and Terrence Howard

Lori Singer set to appear on the NBC procedural, with Diane Neal and Jeremy Irons returning to reprise their roles.

NBC has booked several guest stars for upcoming episodes of Law & Order: Special Victims Unit.

John Stamos, who has appeared on Fox's Glee and HBO's Entourage, will appear as an adoption lawyer with a secret passion in the episode titled, "Bang." The actor was a regular on General HospitalFull House and ER.

Lori Singer, who won a Golden Globe for Shortcuts, joins Stamos in the episode guest starring as a new mother struggling with her increased responsibilities. Stamos and Singer's episode is set to air April 6.

Law & Order: Los Angeles regular Terrence Howard is set to appear in SVU in a special crossover episode, "Reparations," with the LOLA and SVU casts. LOLA is currently on hiatus while the series is being reworked.

Former series regular Diane Neal will return in the same episode as A.D.A. Casey Novak, her first appearance since she exited SVU in 2008. "Reparations" is scheduled for May 4.

The Borgias star Jeremy Irons reprises his role as Captain Jackson, a psychologist who worked with the SVU team, in "Totem." The episode airs March 30.