A call to darkness - no. 9

The Enterprise discovers a lifeless Federation research vessel, orbibting a planet hidden behind a mysterious energy shield.

Over the strong objections of his senior officers, Captain Picard and an away team beam over in search of the missing crew -- And vanish. But soon his captain's disappearance is not the only problem facing Commander Riker.

For a mysterious disease has begun ravaging the Enterprise crew.

Now Riker must uravel the secrets of the planet below in order to rescue Picard -- a prevent the starship's destruction.