At almost the same time the woman Assassin leapt into the lobby, the uniformed man in its center deployed magecraft to light the space, matching the positions of its existing lighting fixtures.
A mage!
Assassin promptly dematerialized, but even she was no match for the speed of light. In the instant before she disappeared, Assassin’s image was burned into several pairs of eyes, the mage’s among them.
A shadow dissolving into light. There was no other way to describe the ghostly figure that had momentarily existed in the doorway.
“What...?”
A Servant...?
The police chief was a Master with Command Seals; even that momentary glimpse was enough for him to be certain that what he had seen was a Servant.
That wasn’t Saber. I only got a glimpse, but those stats... Assassin!?

Fate/Strange Fake: Volume 2, Chapter 3 ("Day 1, Early Dawn")