Two more installments in Lifetime’s Flowers In The Attic are heading to the screen. The network has greenlighted If There Be Thorns, No. 3 in the series, with No. 4, Seeds Of Yesterday, about to get the official go-ahead shortly. Sex And The City alum Jason Lewis is set for both films, written by Andrew Cochran and Darren Stein, respectively. Based on the third novel in V.C. Andrews’ Flowers In The Attic series, If There Be Thorns is directed by Nancy Savoca. It follows Christopher (Lewis) and Cathy Dollanganger (Rachael Carpani) as they live together as man and wife in California with Cathy’s two sons, who are unaware of the nature of their parents’ relationship. Mason Cook (Legends) will play Cathy’s son Bart. A+E Studios is producing in association with Front Street Pictures. Dan Angel and Jane Startz executive produce. Filming on the third movie is slated to begin next month in Vancouver. Lewis is repped by Resolution and Silver Lining Entertainment.