Coming off the heels of last year's hit Original Movies Flowers in the Attic and Petals on the Wind, Lifetime premieres the long-awaited films based on the final two novels in V.C. Andrews' iconic series about the Dollanganger family. If There Be Thorns premieres on Sunday, April 5, at 8pm ET/PT, and Seeds of Yesterday will debut on Sunday, April 12, 2015, at 8pm ET/PT.