There is a poisoning at a reception. The police start to think that the real target is a civil servant who forged an environmental report who also was present at the reception. Due to the forged report, the daughter of a young family is very sick in hospital. The child’s father might have something to do with the death.
A university’s chief librarian is poisoned, police believe he may have been the wrong target and their fears are confirmed when they discover another victim. Professor T is summoned to help solve to help solve the crime, to the horror of Chief Inspector Rabet who is yet to be convinced by his controversial ways.