So, I might have one.  A hook, I mean.  It sort of came to me while I was pondering that whole lying theme and discussing how I'm definitely not going to write any kind of Parent Trap story.  

Instead, I shall write:  An Anti-Parent Trap Story.  

It will include divorced parents, sisters who grew up apart, and some high jinks.  

I could elaborate, but I think I've said enough for now.  ;-)