Wigdor Law is facing a malicious prosecution lawsuit leveled by billionaire Leon Black, who claims the firm failed to properly investigate “false, life-ruining” allegations before representing three women in sexual assault cases against him.

In a 35-page complaint filed Monday in Manhattan Supreme Court, the Apollo Global Management co-founder claims the New York firm and accuser Guzel Ganieva “manufactured allegations” in Ganieva’s now-dismissed lawsuit against Black.