The fluid mimics Heather and pursues Bill and the Doctor across time and space—including a brief encounter with a Dalek battle—to find a "pilot".
Bill realizes the fluid is just looking for a way home. She lets go of "Heather," and the Doctor decides to take Bill on as a full-time traveling companion. 2. Why This Episode Matters
Bill becomes fascinated by a girl named Heather, who has a distinctive "star in her eye." They find a puddle that doesn't reflect correctly; it is actually a sentient fluid from an alien ship.
The fluid mimics Heather and pursues Bill and the Doctor across time and space—including a brief encounter with a Dalek battle—to find a "pilot".
Bill realizes the fluid is just looking for a way home. She lets go of "Heather," and the Doctor decides to take Bill on as a full-time traveling companion. 2. Why This Episode Matters Doctor Who 10x1
Bill becomes fascinated by a girl named Heather, who has a distinctive "star in her eye." They find a puddle that doesn't reflect correctly; it is actually a sentient fluid from an alien ship. The fluid mimics Heather and pursues Bill and
