Season 7, Episode 9 - "Force of Nature"
Stardate: 47310.2 Enterprise is confronted with evidence that warp travel is in fact degrading areas of space. They learn this upon being sent to search for a missing Federation medical vessel.<br><br>The woman who has developed this theory and her brother turn out to also be the ones attacking and disabling warp capable ships traveling through their home area of space.<br><br>The crew of Enterprise must reluctantly join forces with the brother and sister team, in order to locate and rescue the crew of the missing medical ship.
