If There Be Thorns (2015) online

They managed to escape from their mother, born Corrine Foxworth, who once tried to kill them so that she could inherit her estranged father's vast estate. Corrine, who ultimately did inherit all the money, was eventually institutionalized following a mental breakdown. Cathy has two children, teenager Jory, whose biological father is now deceased ballet dancer Julian Marquet, and preteen Bart, whose biological father is now deceased Bart Winslow, Corrine's second husband. While Jory knows about Julian, Bart knows nothing about Bart Sr.; neither knows about Chris and Cathy's sibling relationship. Chris treats both...