The Case of the Uninvited Guest: Uncle Felix and Aunt Lucy's wedding is the target for an unlikely threat

• The Hound of Weston School: the Junior Pinkertons investigate a mysterious arrival

• The Case of the Deadly Flat: introducing Hazel's little sister May, who's determined to be the greatest spy ever

• The Case of the Missing Treasure: the detectives crack fiendish codes to catch a daring thief who is targeting London's famous museums

• The Case of the Drowned Pearl: murder follows the Detective Society wherever they go, even on holiday...

The perfect book for all Detective Society fans and avid readers of the Murder Most Unladylike series