Season One

Principal cast
In order of character appearances
 * Adam Harrison (20/20 episodes)
 * Emily Hart (20/20) / Katherine Winters (4/20 episodes)
 * James Ford (20/20 episodes)
 * Sam Knight (20/20 episodes)
 * Belinda Bennet (20/20 episodes)
 * Chloe Haywood (20/20 episodes)
 * Damon (19/20 episodes)
 * Jeremy Harrison (18/20 episodes)
 * Brody Smallwood (16/20 episodes)
 * Ryan Knight (9/20 episodes)

Recurring cast
In order of character appearances
 * John Harrison (13/20 episodes)
 * Lord Zar (11/20 episodes)
 * Kelly (11/20 episodes)
 * Sherif Lance Knight (10/20 episodes)
 * Darla (10/20 episodes)
 * Britney Thomas (9/20 episodes)
 * Nick Conrad (8/20 episodes)
 * Vesna (7/20 episodes)
 * Nikki Sanders (5/20 episodes)
 * Grams (7/20 episodes)
 * Yellow Eyed Man (5/20 episodes)
 * Abandon (5/20 episodes)
 * Gilbert (5/20 episodes)
 * Mr. Hamilton (4/20 episodes)
 * Isabel Ford (4/20 episodes)
 * Luke (4/20 episodes)
 * Lucy Bennet (3/20 episodes)
 * Queen Sophie Anne (3/20 episodes)
 * Mrs. Knight (2/20 episodes)

Main plot points
Season one focused on the introduction of the characters. Major plot points included:
 * Learning the truth about vampires, demons and Adam being the slayer in Sunset Falls
 * James and Damon already know in the pilot episode.
 * Belinda is told by Adam his secret and about demons during 1x9, after Adam himself learns Belinda is a witch.
 * Sam is told by Adam his secret when he is almost killed by a vampire during 1x13.
 * Jeremy uncovers Adam's secret in Adam's journal during 1x16 and reveals his knowledge in 1x17 where Adam reveals whole story.
 * John although already knows Adam's secret, did not know until 1x20 that James was training him and Adam didn't know John knew.
 * Chloe's research sees her learning the truth on her own during 1x19, but chooses to keep it to herself.
 * Nikki is already aware of demons and vampires in 1x18, but is told about Adam being the slayer in 1x19, she however already knows this as revealed in season 3.
 * Emily and Brody do not know the secret about Adam as of season 1.

Season Antagonist

 * Lord Zar (primary villain)

Season Minor Antagonists

 * Abandon
 * Pilot (1x1) through Transition (1x7)
 * Ryan Knight
 * Rise of the Dead (1x8) through Coyote Moon (1x9)
 * Darla
 * Girls Just Wanna Have Fun (1x11) through Bloodlines (1x13)
 * Vesna
 * The Wendigo (1x14) through Unnatural Selection (1x17)

Season 1 Episodes (2007–2008)
Legend;


 * Episodes marked with a (#) are monster of the week episodes


 * Episodes marked with a  (+) are episodes in the series'  main season/mythology arc.