Tania Raymonde (“LOST”), Brit Morgan (“True Blood”), and Jennifer Landon are the latest Manson Girls to join director Susanna Lo’s bio-pic on Charles Manson cult follower Nancy Pitman. The film stars go-to-psycho Bill Moseley as Manson and is set to shoot in Los Angeles come March.

Thora Birch, who had replaced Lindsay Lohan in the project, has gone all helter skelter with her career choices (a rumored affair with her manager/dad) and is no longer attached to star as Pitman. No word on who will be filling in her shoes, but so far casting for the film has been pretty impressive.

Raymonde is best known for her portrayal of Danielle Rousseau’s doomed daughter on ABC’s “LOST.” The sexy-in-a-very-brainy-kind-of-way 22-year-old can also be seen in director A.D. Calvo’s supernatural thriller The Haunting of Amelia.

Brit Morgan joins the family

Morgan heightened her profile last year by playing werewolf-groupie Debbie Pelt in season three of HBO’s vampire-soap “True Blood,” while Landon—daughter of Michael Landon—first cut her teeth as a regular on the daytime soap “As the World Turns.”

Manson Girls costars Monica Keena (Night of the Demons), Heather Matarazzo (Hostel 2), Estella Warren (Planet of the Apes), Stella Maeve (“My Super Psycho Sweet 16: Part 2″), Laura Harring (One Missed Call), Patti D’Arbanville (Perfect Stranger), Michael Monks (Street Kings), Chad Faust (Tamara), and Eric Balfour (Skyline).