Star Trek: The Next Generation - Season 1 Episode 23 -

Puzzled, the Enterprise follows the enigmatic trail of distress messages left behind by the vessel of reputed time-space-continuum researcher Dr. Paul Manheim, which went missing years ago during his last experiment. It went terribly wrong, causing a time-distorting ripple to spread from a binary star system and pulsar's tapped-into unimaginable energy, which already affects the Enterpise crew. To prevent the galaxy being ripped open, the process must be reversed, although gravely, maybe fatally, injured Mannheim can only give unreliable instructions to Data. Picard ...