While I was writing my new novel, The Perfect Date, I gave it the working title The Dog Walker. Caz, the central character, is a professional dog walker, and it opens with her rescue dog discovering a body early one morning up on Brighton Racecourse.

She realises with horror that it's the man she met through a dating app, the Perfect Date she was due to see again that very evening. But worse – far worse – is that this is the second time this has happened to someone she was seeing. Is it a horrible coincidence? Or is there something else going on?