As Morse comes to realize that something is blocking his promotions (his test was misplaced meaning a fail) he must decide whether to continue to do his job with little respect or opportunity for recognition. Thursday is in a funk following his daughter's taking off on her own with no forwarding address. He takes it out on his fellow workers and specifically on Morse. The case involves a series of drowning around a campus, at a public bath. The major event on campus is a chess match between a primitive (by our standards) computer and a Russian champion. This is Britain's introduction to Nerdity (if you will). Those most in danger seem to be those who are closest to the case. Morse is such a complex young man, dealing with so much angst.