I've never read anything by Richard Osman before. It was decidedly fine. A regular murder mystery with slightly quirky characters and enough of them were rich so that you could fly around the world to different places on wild goose chases. The characters were also fine. I didn't hate it. I didn't love it. The only characters I had any sort of feelings for were Steve (a sweetie) and Rosie (funny and strong). 

Didn't impress me enough to delve into any more of his books. I don't even know how this one got on my TBR list? I'll stick to my funnier murder mysteries.