Robyn Palmer

The group slides to a parallel dimension where an asteroid is on a collision course with Earth, and Einstein never allowed nuclear weapons to be created. With only 48 hours until "Dooms Day", and 72 hours until the next slide, they work feverishly to recreate Einstein's equation for the atomic bomb.

It's a race against time to retrieve the Pharaoh's diamond before it can be cut up and sold off.