Seven dead. One killer. A shocking rampage that left a community reeling. This documentary delves into the chilling true story of Jennifer San Marco, a seemingly ordinary postal worker who unleashed a deadly attack on former colleagues and a neighbor in Goleta, California. Through exclusive interviews with friends, survivors, criminologists, and eyewitnesses, we uncover the shocking events leading up to the tragedy and explore the dark secrets that drove her to such desperate measures. Uncover the truth behind this heartbreaking case in "Deadly Parcel: Postwoman Serial Killer." Subscribe for more true crime stories!