USA Network’s upcoming mystery drama “Anna Pigeon” has added Paulina Alexis and Tricia Helfer to the cast.

The series, based on the novels by Nevada Barr, follows Anna Pigeon, a New Yorker who moves outside of the city after a devastating personal loss changes the trajectory of her life. Now working to outrun her demons as park ranger working in the vast American wilderness, Anna finds herself embroiled in a series of crimes she has no choice but to solve.

“Chicago P.D.” alum Tracy Spiridakos will play the title character, joined by supporting cast Ronnie Rowe Jr., Manuel Rodriguez-Saenz, Cooper Levy and Ryan Northcott. Alexis will play Zoey Bear Child, a young ranger coming into her own who considers Anna a mentor. Helfer will play Molly Pigeon, Anna’s older sister and a psychiatris

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