Much-loved Calleshire research chemist Derek Tridgell has been ill for some time.
Sloan and Crosby are brought in to investigate whether these are just the ramblings of a man at death\'s door, or a real confession at the final hour..
On his deathbed, his incessant, but unintelligible mutterings culminate in a very clear cry of foul murder.
Much-loved Calleshire research chemist Derek Tridgell has been ill for some time