Clued-up career-girl Cassy Brookes has life under control until one disastrous morning changes everything. When she finds herself stuck in a doctor's surgery, a cryptic message left in a crossword magazine sends her on a search to find the mysterious puzzle-man behind it. Cassy is soon torn between tracking down her elusive dream guy, and outwitting her nightmare workmate - the devious Martin. Facing a puzzling love-life, will she ever be able to fit the pieces together and discover the truth behind this enigmatic man?