The watch theorizes that the aliens are stealing their victims' skin and disguising themselves as humans, so anyone in Glenview could be an alien.

It took us a while to work out that the aliens hadn't stolen our dreams.

Why an alien with nanonic technology would enlist human allies and steal a starship.

The aliens have stolen the key; and now they've taken the spaceship.

Did aliens steal your brains?

However, the aliens invaded his laboratory and stole the samples, using them to create Biollante.

Some aliens have stolen my friend.

These aliens apparently steal their cerebral cortices from other organisms they engulf and digest.

In the first game, Keen is exploring on Mars when aliens steal four spaceship components that he must get back.

The aliens took over engineering, stole the warp core, and destroyed the main power grid, leaving Voyager defenseless.