Watch My Sister Celine for Free: How to Stream the Movie Online at 123Movies. . Reserved, slender brunette Beth has just gotten engaged to nice guy Liam, and travels home with him on holiday to meet his family. But when the self-conscious bride-to-be meets her fiancee's sister Celine, she feels an instant connection to the hauntingly beautiful, intense young woman. As Beth's curiosity for her wild sister in law grows, Celine begins a game of psychological chess designed to upset Beth's fragile sexual identity. But does Celine's quest for pleasure mask a dark, disturbing secret? How much is Beth willing to risk to find out? Introducing new lesbian superstar Sovereign Syre in an unforgettable debut performance.