Unknown Person

When five friends inadvertently cause a deadly car accident, they cover up their involvement and make a pact to keep it a secret rather than face the consequences. A year later, their past comes back to haunt them and they're forced to confront a horrifying truth: someone knows what they did last summer…and is hell-bent on revenge.

Helix is an intense thriller about a team of scientists from the Centers for Disease Control who travel to a high-tech research facility in the Arctic to investigate a possible disease outbreak, only to find themselves pulled into a terrifying life-and-death struggle that holds the key to mankind's salvation...or total annihilation.