If you google the names in the mythology titles you will find they all have two things in common - what they are and where they were. So 'Something' of 'Somewhere'.
The lion clue is awful, it's a real stretch to get the book from that. But it's almost a soundalike clue, if you say out loud the name of a very popular BBC police show it does sound a little like the book title.
The love clue has three bookshelves. Two topics are in monochrome, but the 'love' one is not.
Krampus/bobbies/skull was shortlisted for one of the book awards this year.