"The Last Apprentice" is a series of dark fantasy novels written by Joseph Delaney. The story follows a young boy named Tom Ward, who is the seventh son of a seventh son, making him uniquely suited to become an apprentice to a Spook, a person who protects the community from supernatural threats. Throughout the series, Tom learns to confront various creatures, including witches, ghouls, and boggarts. As he navigates his training, he faces moral dilemmas and personal challenges, ultimately discovering the complexities of good and evil in a world filled with magic and danger.