" No sooner had he finished with a case than another two or three appeared in its place. What was the name of that creature? The Hydra, was it? That was what he was fighting. Every time he cut off a head, more popped into his in-tray. Coming back from a holiday was a nightmare. And now they were giving him rocks to push up hills as well. "

― Ian Rankin , Knots and Crosses (Inspector Rebus, #1)