This omnibus edition contains the first three books in the Angela Marchmont Mystery series Meet enigmatic "lady detective" Angela Marchmont in this series of light-hearted and charming 1920s mysteries! Includes: THE MURDER AT SISSINGHAM HALL (Book 1) On his return from South Africa, Charles Knox is invited to spend the weekend at the country home of Sir Neville Strickland, whose beautiful wife Rosamund was once Knox's fianc?e. But in the dead of night Sir Neville is murdered. Who did it? As suspicion falls on each of the house guests in turn, Knox finds himself faced with deception and betrayal on all sides, and only the enigmatic Angela Marchmont seems to offer a solution to the mystery. This 1920s whodunit will delight all fans of traditional country house murder stories. THE MYSTERY AT UNDERWOOD HOUSE (Book 2) Old Philip Haynes was never happier than when his family were at each other's throats. Even after his death the terms of his will ensured they would keep on feuding. But now three people are dead and the accusations are flying. Can there really be a murderer in the family? Torn between friendship and duty, Angela Marchmont must find out the truth before the killer can strike again. THE TREASURE AT POLDARROW POINT (Book 3) When Angela Marchmont goes to Cornwall on doctor's orders she is looking forward to a nice rest and nothing more exciting than a little sea-bathing. But her plans for a quiet holiday are dashed when she is caught up in the hunt for a diamond necklace which, according to legend, has been hidden in the old smugglers' house at Poldarrow Point for over a century. Aided by the house's elderly owner, an irrepressible twelve-year-old, and a handsome Scotland Yard detective, Angela soon finds herself embroiled in the most perplexing of mysteries. Who is the author of the anonymous letters? Why is someone breaking into the house at night? And is it really true that a notorious jewel-thief is after the treasure too? Angela must use all her powers of deduction to solve the case and find the necklace-before someone else does.