Eric Roberts, Adam Brody and Demi Moore have joined the cast of Rob Epstein and Jeffrey Friedman’s Lovelace. Brody will play Deep Throat co-star Harry Reems, Roberts is coming aboard as lie detector expert Nat Laurendi and Moore will do a turn as play feminist author-activist Gloria Steinem. Amanda Seyfried and Peter Sarsgaard head the continually expanding cast as former porn star Linda Lovelace her husband Chuck Traynor.

For all of Deadline's headlines, follow us @Deadline on Twitter.