From multi-award winning author, L. Neil Smith:

Captain Agot Edmoot Mav, Extraordinary Inquirer for Their Majesties' Bucketeers, must solve the unsolvable mystery of who has killed a famed, but controversial, scholar.

For the killing was done in a windowless room which was locked and the murder weapon itself is a mystery.

But Agot Edmoot Mav is nothing if not persistent, and as a loyal member of the Bucketeers, will not rest till the truth is revealed about this murder, most foul…and most alien.