The Importance of Being Honest — Roger Silverwood

When a man is savagely murdered in a distillery, yet none of the suspects is burly enough to have delivered the fatal blow, Detective Inspector Michael Angel is called in to unravel the mystery.
He proves to be even more in demand when jailbird and bank robber Morris Yardley tries to buy his freedom with the proceeds of his last heist, insisting Angel acts as his go-between.
An old lady in a sweetshop, a dog called Schwarzenegger and a whiff of menthol all have their part to play as Angel races to reveal the murderer in this unusual and chilling mystery.