A spin-off of "Buffy the Vampire Slayer," the 1999 television show "Angel" follows the titular vampire burdened with his human soul as he tries to find his own redemption. While he struggles with his own inner demons, Angel opens a private detective agency in Los Angeles, and takes on supernatural cases that other traditional detectives will not touch. Half-demon, Allen Francis Doyle, and former cheerleader and fellow "Buffy the Vampire Slayer" alum, Cordelia Chase, join the team early to help Angel out. However, more original and crossover characters pop in and and out throughout the series, especially as the cases grow more difficult and have more serious consequences.