In case I don't return. Eureka 40 10 4 400 30 9 30 70 100 5 200 30 10 40 1 80 5 100 400 40 10 50 10 200 300 100 8 70 9 1 50 300 10 20 800 10 300 10 200 0051172543672. An eminent Oxford professor is murdered but the authorities are calling it a suicide. Beautiful young don Catherine Donovan refuses to believe the official verdict especially after she receives a cryptic note sent just before the professor's death, along with a collection of priceless antique maps. Teaming up with classicist James Rutherford, she embarks on a journey which takes them from the dreaming spires of Oxford to the ancient wonders of Peru and Egypt. With a shadowy organization determined to stop them, can Catherine and James unlock the mystery of the ancients before they become the killers' next victims? And can it really be possible that these clues are warning of an imminent cataclysm one that puts even more than their lives in peril?