"Unicorns never were that bright," I said. "That's why they're the only kind to stab their own entire species into extinction."

"Not quite the entire species," Callum said.

When a man from Callum's past turns up at our door claiming to have lost both the last herd of unicorns in England and his sister, I knew it should be a hard pass. The past has teeth.

But old debts plus a damsel in distress means Callum just can't say no. G&C London, Private Investigators, are plunging deep into the magical underbelly of Leeds, and we're going to have our work cut out for us.

Never mind the criminal dynasties, cross-dressing trolls, trained attack lizards, and philosophical donkeys – we need to find the sister and get out before the Watch get involved.

Why? Well, they've killed me three times already.

Yeah. I preferred extinct unicorns.

This is the third book in the Gobbelino London, PI urban fantasy series, centred around the adventures of a mercenary feline PI and his human sidekick. It contains snarky cats and other gods, many bad jokes and terrible puns, plus a large serving of mythological and real creatures behaving badly. It will appeal to anyone who likes their fantasy funny, modern, and filled with friendship rather than romance - and also to those who suspect their cat may be living a great and secret life when they're not looking.

A Complication of Unicorns contains some violence, particularly toward those not treating cats with due respect, but none of it is graphic. It contains no sex and only mild language. It does, however, contain blasphemy.