General Hospital spoilers and updates tease Drew Cain (Cameron Mathison) may have been playing the long game to get his Quartermaine name and legacy back. Why Would A Letter From Monica’s Long Lost Sister Have Become Scribble Paper? Viewers will recall that Martin Grey (Michael E. Knight) found a letter from Monica’s long lost sister, played by Erika Slezak, to Monica on the floor of Drew’s house. Might Drew Have Taken A Page From Valentin Cassadine’s Playbook And Hired A Woman To Pose As Monica’s Sister? Might he have taken a page from Valentin Cassadine’s (James Patrick Stuart) playbook, and hired the woman to pose as Monica’s sister, and Monica never even have received that letter?