How can a man be in two places at once? How might a murder be committed when no one is seen entering or exiting the house? Can an entire crime be solved with just a suitcase of empty beer bottles? It's time for you to tackle the conundrums that confounded the best detectives over the years. Technology can now shine a light on some of the most difficult cases, but the analytical mind needed to crack the clues remains as essential as ever. Do you have what it takes to be a Scotland Yard detective?