Season 2 (2010-11)
Number of Episodes: 22
Intro: Season 2 of The Vampire Diaries picks up the story with Katherine back in town with her sights set on Stefan. Meanwhile, with his father dead, Tyler's Uncle Mason helps him deal with his animal urges.
Original Air Dates: September 9, 2010 - May 12, 2011 at 8:00 PM ET/PT on The CW

Episode #: 201 (23)
Title: "The Return"
Summary: Elena arrives home to a nightmare as she discovers Uncle John's and Jeremy's fate.

Katherine's arrival sends Stefan and Damon on a path to find out what she wants. Meanwhile, Tyler is surprised when his charming and mysterious uncle, Mason Lockwood, arrives to console the family.

Episode #: 202 (24)
Title: "Brave New World"
Summary: When a confused and desperate Caroline leaves the hospital and joins her friends at the Mystic Falls Carnival, Damon wants to take immediate action, but Stefan and Elena come to Caroline's defense. Damon has suspicions about Tyler's Uncle Mason. Upset with everything going on around her, Bonnie takes her anger out on Damon.

Episode #: 203 (25)
Title: "Bad Moon Rising"
Summary: Elena, Damon, and Alaric travel to Duke University to study Isobel's research on folklore and paranormal phenomena, hoping to find some clues to the mystery surrounding the Lockwoods. Vanessa, a former student of Isobel's, helps them sort through the research and ends up learning more than she had anticipated. Stefan encounters a terrifying new danger in the woods, and Tyler uncovers a shocking discovery about his uncle Mason.

Episode #: 204 (26)
Title: "Memory Lane"
Summary: Stefan takes more dramatic actions as he tries to discover the truth behind why Katherine has returned to Mystic Falls, and he is stunned when Katherine reveals some new information about the events that unfolded in 1864. Damon tries using a new method to resolve his issues with Mason, but his decision has serious consequences. Tyler pressures Mason to tell him the truth about the Lockwood family.

Episode #: 205 (27)
Title: "Kill Or Be Killed"
Summary: While Stefan and Damon argue over how to handle the Lockwoods, Tyler learns more about his Uncle Mason and the family curse. Despite Elena's wishes, Jeremy gets closer to the Lockwood mystery by hanging out with Tyler. Sheriff Forbes receives some shocking information from Mason.

Episode #: 206 (28)
Title: "Plan B"
Summary: Jeremy offers to help Alaric and Damon deal with Katherine. When Bonnie learns some new information about Mason, she decides to share it with Stefan, which leads to Damon taking action on his own.

Episode #: 207 (29)
Title: "Masquerade"
Summary: Damon and Stefan devise a new plan to deal with Katherine at the Lockwood's masquerade ball. Bonnie, Alaric, and Jeremy do their best to help Stefan and Damon with their plan, but Katherine has a surprise that none of them expected.

Episode #: 208 (30)
Title: "Rose"
Summary: Jeremy teams up with Bonnie after she casts a difficult spell. Stefan and Damon both come to Elena's assistance, and in the process, learn some information about vampires, people and events in the distant past. Meanwhile, Caroline tries to make things easier for Tyler.

Episode #: 209 (31)
Title: "Katerina"
Summary: Elena is put in peril when as she searches for information about Katherine's past. Meanwhile, Bonnie and Jeremy meet a new student, Luka, with an unusual family history and Damon uses a new-found confident to discover the purpose of the moonstone.

Episode #: 210 (32)
Title: "The Sacrifice"
Summary: Elena comes up with her own plan to deal with her situation and offers Rose a tempting incentive for her help. Tyler shows Caroline the Lockwood's cellar, where she makes a terrifying discovery. Jeremy and Bonnie attempt to retrieve the moonstone.

Episode #: 211 (33)
Title: "By the Light of the Moon"
Summary: With a full moon approaching, Caroline helps Tyler prepare for his inevitable transformation. Damon and Alaric become suspicious when a mysterious visitor named Jules shows up in Mystic Falls looking for her missing friend, Mason. Bonnie and Luca team up to work on a spell. Elijah makes an unexpected appearance with an offer that could change everything.

Episode #: 212 (34)
Title: "The Descent"
Summary: Elena has a new plan for the future, but Stefan has his own thoughts about how she should handle the situation. Damon tries to get the truth out of Jules. Matt and Caroline try to be honest about how they feel about each other. Damon finds it difficult to hide his true feelings when a life-and-death situation impacts him more than he expected.

Episode #: 213 (35)
Title: "Daddy Issues"
Summary: Elena, Damon, and Jenna are surprised when Johnathan Gilbert returns to Mystic Falls. Caroline tells Stefan about her conversation with Tyler. Jeremy consoles Bonnie after her upsetting conversation with Jonas. A violent situation breaks out after Jules takes a hostage.

Episode #: 214 (36)
Title: "Crying Wolf"
Summary: Stefan and Elena make plans for a romantic weekend at the Gilbert's lake house, not realizing that someone has followed them. Jenna starts to worry that Alaric isn't being completely honest with her. Jules explains the significance of the sun and moon curse to Tyler, but leaves out an important detail. Bonnie deceives Luka into giving up some surprising new information.

Episode #: 215 (37)
Title: "The Dinner Party"
Summary: Stefan tells Elena about a dark time from his past. Jonas gets the truth out of Luka and makes his feelings clear to Bonnie and Jeremy. Damon schedules a dinner party with Alaric, Jenna and Andie in attempt to catch Elijah off-guard.

Episode #: 216 (38)
Title: "The House Guest"
Summary: Even though Elena, Damon and Stefan are tired of Katherine's mind games, they realize that Katherine's knowledge of Mystic Falls history will help them. Alaric reveals some shocking information to Jenna. Stefan and Bonnie try to convince Jonas and Luka that they should all be working together, but Jonas' lack of trust leads to a violent and intense confrontation.