It was a secret, but Kaley Cuoco was kicking butt for two.

In “Role Play,” the actress returns to the kind of production she loves.

The kind that continuously flips between thriller and dark comedy—think Max’s “The Flight Attendant” and Peacock’s “Based on a True Story,” which has been greenlit for a second season.

And she was pregnant during filming.

  

“Role Play,” streaming on Prime Video on Friday, has Cuoco portraying Anna, an assassin who long-ago adopted the moniker Emma and conceals her day job from loving husband Dave (David Oyelowo) and their two children. Anna taps into her ability to disguise herself while carrying out her kills for a night of role-play when she forgets her and Dave’s anniversary. Chaos ensues when Anna’s work begins bleeding into her personal life, starting with her romantic night gone awry.