"Hmm," Alex said, paddling in place. "Get revenge on my brat sister or dogpile on Daddy?"

"Which brat sister?" Iris asked, practically. "Not me, I hope."

Alex ignored her, scanning April and Ally thoughtfully. The girls looked at each other, then said, in unison, "Daddy."

"Yeah," Alex said, and without warning all four of them were heading for him, cutting through the water like so many sharks, and wearing equally big grins.