England, 1925. After years shut away from the world, former detective Lord Edgington of Cranley Hall plans a grand ball to celebrate his seventy-fifth birthday. But when someone starts bumping off members of his scheming family, the old man enlists his teenage grandson to help find the killer, before one of them is next.

"England, Summer 1926. When Lord Edgington receives a letter from Hugo Templeton-Swift, a famously rich old man who believes he's being poisoned, the renowned detective fetches his assistant, his golden retriever, and a full staff of servants and heads off to the countryside to investigate. But when the bodies start falling in the enigmatic manor of Riverside Keep, anyone could be guilty. Though all fingers point to Hugo's younger wife, his three...

"Lord Edgington of Cranley Hall has some living to do. The next item to cross off on his list of grand ambitions is a serene balloon flight above his palatial estate. But, after a man falls to his death, the pleasant pursuit is interrupted, and the esteemed detective suspects foul play. With the help of his hapless grandson, their loyal golden retriever and a couple of parachutes, Lord Edgington must solve the murder before the meddlesome police arrive...