Dark matter: "Andrew Crompton, Master of Gresham College and amateur astronomer, is found dead at the foot of the University Observatory stairs only days before he expected to experience "an excess of joy," leaving Lewis and Hathaway to unravel a puzzle fraught with campus intrigue spanning decades. Days later, Dr. Ella Ransome, Crompton's wife's best friend, is also murdered. Are the two crimes connected? Facing a list of suspects that include everyone from the senior college tutors right down to the head porter, Lewis uncovers a college-wide blackmail plot that may hold the key to unravelling the murder of the Master, and much more." Your sudden death question: "Lewis and Hathaway find themselves cancelling their August Bank Holiday plans when a private trivia weekend at Chaucer College kicks off with the murder of its standout competitor, Ethan Croft. The duo quickly learns that Croft was a womanizer with a number of secrets, a brilliant Russian linguist turned primary school teacher whose professional career suffered some shadowy disgrace behind Oxford's closed doors years ago. But did he end up floating in the fountain after a trust gone awry? Or is there more to the whispered tales in the hallways than just spurned lovers and cuckolded husbands?"