S1, E14: While holding a vigil at Lucas' bedside as he lays in a coma, Karen meets Brooke, who is now dating Lucas, and learns from Deb (recurring guest star BARBARA ALYN WOODS) that Deb and Dan are getting divorced. Most shocking of all, Karen is horrified to discover that Keith was drinking alcohol while driving at the time of the accident. Meanwhile, Nathan tries to win Haley back after she breaks up with him.