Will Smith’s Overbrook banner and Sony have purchased Steve Bloom spec script “Sisters of Mercy” for mid-six figures.Smith and James Lassiter are producing for Overbrook along with Alex Siskin, who brought the project to the shingle. Story follows a widower father who is rescued after his wife’s death by members of her book club, who soon begin running his life with their advice on parenting and dating. Overbrook’s latest title, Smith starrer “The Pursuit of Happyness,” has grossed $126 million domestically. Bloom’s previous credits include “James and the Giant Peach” and “Tall Tale: The Unbelievable Adventures of Pecos Bill,” both for Disney. He is repped by Original Artists and Meyer Management. Overbrook is repped by CAA.