Baldoni, in a lawsuit filed in New York federal court on Thursday, alleges extortion, defamation and claims related to breach of contract, among several others. He’s joined by his film studio, Wayfarer, and its chief executive Jamey Heath, and their public relations representatives, Melissa Nathan and Jennifer Abel. They seek at least $400 million.

Justin Baldoni filed a $400 million lawsuit against 'It Ends With Us' costar Blake Lively, her husband Ryan Reynolds and their publicists less than one month after Lively's complaint that accused him

What’s next after Baldoni’s new lawsuit? Crisis comms and legal experts weigh in on all the ways the competing suits could go.

Justin Baldoni has sued both Blake Lively and Ryan Reynolds for $400 Million over the accusations stemming from working on 'It Ends With Us.'

It Ends With Us” actor and director Justin Baldoni has sued his co-star Blake Lively and her husband, “Deadpool” actor Ryan Reynolds, for defamation.

The "It Ends With Us" director/actor calls himself a "scapegoat" for the Hollywood power couple in his Thursday filing

Justin Baldoni and Wayfarer Studios accuse Blake Lively, Ryan Reynolds, and their team of defamation, extortion and hijacking creative control of the film 'It Ends With Us' in a federal lawsuit filed in New York.

Justin Baldoni’s studio filed a new lawsuit against his ‘It Ends With Us’ costar Blake Lively after she allegedly ‘attempted to bulldoze reputations’