In The Killing Field, Poe and Tilly are having breakfast, wondering how to spend the rest of their holiday, when their presence is requested at a Cumbrian airfield. An airfield that, during the 2001 foot and mouth crisis, was known as the killing field . . . In Why Don't Sheep Shrink?, a global pandemic forces Poe and Tilly to self-isolate together. Things don't go well. They're bickering and on the verge of falling out until Poe finds an old case file: a locked room mystery he's been mulling over for years. Step forward, Tilly Bradshaw . . . Dead Man's Fingers sees Poe, Tilly and Edgar, Poe's English springer spaniel, enjoying a picnic at a nature reserve. When Edgar chases a rabbit, and Poe and Tilly chase after him, they stumble upon a twenty-year-old mystery, a mystery that couldn't be solved until now . . .