It's all in the chemistry... Sisters Sarah and Molly are close, but they couldn't be more different. Sarah runs a craft business and is obsessed with all things shiny and glam, whilst Molly is much more at home in her white coat and goggles, working in a science lab. When Molly is put onto a new assignment, she's over the moon. It's a high-profile, top secret project - and she has a handsome new boss to ogle at when she's not bending over a petri dish... But when Sarah finds herself on the painful end of a disastrous break-up, no amount of Ben & Jerry's or trashy rom-coms can cheer her up. She wants to take a more drastic approach to dealing with her heartbreak, and one that only her sister - and perhaps a sprinkle of science - can help with . . . Will Sarah find love where she least expects it, or is it really all in the chemistry?