Okay, I have to admit I don't normally read 'Girly Books'. But, my wife had been letting her coffee go cold, due to her head in the book for hours at a time.
Being curious, and noticing that it alluded to being a mystery. I thought what the heck - I can have a sneak, and then put the page marker back where she had left it...
Busted! I was still reading the engaging story when she got back from the shops. Thankfully all I got was a raised eyebrow, and she curled up on the sofa - book in hand.