The Lucian serum is the serum given to Luke Cahill. Taking the serum will grant the consumer all Lucian Branch powers and abilities, including strategic plotting, spying abilities, and hunger for power. Benjamin Franklin is the only known Lucian to successfully make the serum. Luke Cahill, Isabel Kabra, and possibly Vikram Kabra are the only known people to have taken it. Vikram Kabra, however, was born with the serum in his DNA, while Isabel wasn't. She was born a Vesper. Clue18.jpg Clue26.jpg Clue27.jpg Clue34.jpg Clue35.jpg Clue37.jpg Clue38.jpg