Well, that was weird.
Some call it Jeeves-and-Wooster crossed with James Bond. Maybe.
There's certainly some astonishingly clever wordplay.

I particularly admired, "Then the Countess rose and made her way with fragile dignity to the door, where she let out a fart of such frightening power and timbre that I feared she had done herself a mischief."

We come to realize that Mortdecai is very clever and capable, but perhaps not quite clever and capable enough. Let's just say that at the end he is in a very low position indeed, so low that one wonders how there could possibly be a sequel, or how the remarkable Jock could be in it.

But I intend to find out.

Recommended? I'm not sure. This book certainly isn't for everyone.
Maybe get it from a library rather than buying a copy.