Mystery of the Missing Crew
An alien attack leaves Data in command!

Mystery of the Missing Crew is a Star Trek: The Next Generation - Starfleet Academy young adult novel – the sixth novel in the series – written by Michael Jan Friedman. Published by Pocket Books, it was first released in .

Summary 
From the book jacket
An android is found in the ruins of a colony on Omicron Theta. The crew of the Tripoli reactivate the android and discover his name is Data, a name that suits his incredible curiosity. With the encouragement of his new friends, Data applies to Starfleet Academy and is accepted.

Cadet Data begins his journey to Starfleet Academy aboard the science vessel, Yosemite. Even as he looks forward to the Academy, he struggles to find his own identity and to fit in with the other cadets.

But Data's worries are cut short when the Yosemite is suddenly attacked by an unknown vessel and suffers severe damage. When power is restored, Data discovers that the adult crew has mysteriously disappeared, and only Data and the other Academy-bound cadets are left to face the wrath of a new alien race, who are demanding that Data and his cadet crew surrender their ship, or be destroyed.

Characters 
Data Cadet.

References 
Starfleet Academy

Novels

cs:Mystery of the Missing Crew
de:Die verschwundene Besatzung
nl:Mystery of the Missing Crew