The Rittenhouse doctors cope with a blood shortage in Philadelphia. Dana helps a patient who unknowingly contracted hepatitis from her husband, and Lu deals with a family of illegal dog fighters who have Lyme disease.

Andy finds out that a TV chef has leperachy when she develops a rash. Lu must decide between avenging Mickey's death and her own beliefs about the death penalty and honesty when she is asked to testify in the defense of his murderer who clearly is mentally unstable. Lu also is shocked when she discovers her neighbor's body and corruption in the Philadelphia Police Department.

A smallpox vaccine for a hospital worker leads to life-threatening complications for her child. Also, Andy helps a premature baby unknowingly save the life of her mother.

Lu treats a young girl for E. Coli who may have contracted E. Coli from eating undercooked food. Lu meets Ben Sanderson, a man who works for the company that owns Rittenhouse and wants to film the doctors as they work in order to get more donations for the RWHC. Meanwhile, Andy treats a woman who has been trying to have a baby and learns a shocking secret about her Southern past. Also, Lana gives Lu and Andy's patients advice, leading to amazing results.

Andy and Milo are invited to stay in a beachside cabin owned by a patient of Andy's in a beachside vacation community. The vacation gets interrupted when a young boy suddenly becomes very ill with similar symptoms to Andy's patient who has cancer. Andy is furthur shocked to learn that 9 other residents of the town have died from cancer.

On a stormy Halloween night, a 7 year old girl suffers a serious burn while trick or treating and the only person who could possibly save her life by giving her a skin transplant is her twin sister. Lu must decide if it is ethical to ask the young girl to proceed with such a risky and painful procedure. Meanwhile, Lizzy and her friends witness a crime in the hospital morque while Peter and Lana get the hospital into the Halloween spirit.