Arthur nearly fires Danny for failing to adhere to triage protocol, thereby delaying the treatment of a critically injured prostitute with AIDS; Phillip becomes the acting chief of staff after Hackett suffers a fatal heart attack during a little afternoon delight with Angela in the MRI room; Jeffrey and Arthur argue over the future of a baboon with the potential to prolong the life of Jeffrey's patient with heart failure and Arthur's patient with AIDS. (thetvdb.com)