Well, Liane has never done me wrong yet. Not since I first stumbled across her in my parents' Florida condo library back around 2010. Since that day I've known I'd never be bored at the pool as long as I had one of her novels in hand.
This is the one about Stan and Joy Delaney and their four kids. Retired tennis instructors in Sydney, they're unsettled in their new life, when a desperate, unexpected, seemingly harmless visitor knocks on their door one night. The ripple effect of their offer of refuge extends to their four adult children. When Joy goes missing, foul play is suspected and family secrets are unearthed.
This is what's called a propulsive plot. You keep turning pages to find out what happens next. I don't recommend starting it if you're expected to cook dinner.