Penny Spring and Sir Toby Glendower Books in Order

Anthropologist Penny Spring finds a body while exploring ancient ruins in Turkey, but it vanishes before police arrive. When her archaeologist friend Toby discovers another victim, their holiday becomes an investigation involving a visiting film crew.

When an archaeologist disappears from a dig in Israel, his colleague Sir Toby Glendower investigates. The missing man was nearing a discovery linked to a legendary treasure, making his research central to the mystery.

A corpse in a Cape Cod cranberry bog draws Penny Spring into an investigation involving a wealthy family. While Toby Glendower pursues their history in Italy, Penny plans a dangerous trap with herself as bait.

Penny Spring and Sir Toby investigate threatening letters sent to the author of a Mardi Gras history. Their inquiry grows urgent when his publisher wakes beside a murdered woman in New Orleans, drawing the academics into dangerous secrets among Creole society.

Plans for a nuclear reactor on an ancient Breton burial site are disrupted by murder with apparent occult connections. When archaeologist Toby Glendower is kidnapped, his colleague Penny Spring must continue the investigation and find him.

Penny Spring visits a friend whose inherited Scottish castle seems haunted, but a neighbouring landowner's death turns unease into a murder inquiry. Sir Toby joins the investigation as threats along the isolated coast put Penny herself in danger.

When Professor Giles falls under suspicion after the murder of his academic rival, Freyer, two fellow scholars undertake an investigation. American anthropologist Penny Spring and British archaeologist Sir Toby Glendower work together to establish what happened and clear Giles's name.

A Russian ballerina suspected of murdering a fellow performer refuses to speak to anyone except Toby Glendower, whom she calls her father. Penny Spring must locate him at a Welsh excavation as the mystery becomes personal.

A holiday at a friend's Roman villa becomes a murder investigation for anthropologist Penny Spring and archaeologist Sir Toby Glendower. The killing of the villa's caretaker draws the visiting scholars into the mystery surrounding their host's property.

Teacher Clara Bacon is found seated at her desk, her carefully arranged body apparently directing investigators toward particular clues. Penny Spring and Sir Toby face an unusual puzzle: although remarkably preserved, the corpse has been dead for more than a month.

Penny Spring and Sir Toby Glendower investigate a death linked to an unsettling museum theft. A treasured devil mask vanishes and then returns bearing a warning of murder, making its disappearance more than an ordinary case of stolen antiquities.

Anthropologist Penny Spring and archaeologist Sir Toby Glendower take a Mediterranean cruise that becomes a murder investigation. When a wealthy father and son are killed, the pair must determine who aboard is responsible.