Let's talk 'Blink Twice's WTF ending

Blink Twice is a thriller so rich with twists and clues you ought to see it twice. Sure, it begins like a dream: A cocktail waitress named Frida (I Wanna Dance With Somebody's Naomi Ackie) gets swept away to the private island of a debonair tech billionaire named Slater King (Channing Tatum). But beyond bountiful brunches and endless streams of champagne and plumes of pot smoke, something sinister slinks in the shadows of this seeming paradise. If you've seen Blink Twice and found your head