[s1e15] Masquerade 🎁 Works 100%

The episode marks the first appearance of Matt's mother, Kelly Donovan, and introduces Harper, a vampire who escaped from the tomb. Episode Comparison

Alaric attempts to kill Damon but is killed himself. He remarkably comes back to life, revealing for the first time the power of his protective Gilbert Ring. [S1E15] Masquerade

Lucy reveals herself as a distant relative of Bonnie Bennett and turns on Katherine once she realizes Bonnie is "one of the good ones". She breaks the link and hands the moonstone to Katherine, but also incapacitates her. The episode marks the first appearance of Matt's

If you specifically meant S1E15, this episode focuses on the mystery of Elena's birth mother and the fallout of the tomb opening. and introduces Harper