This March streamed Sky Sports Big Weekend on now. F1 roars back to life with Hamilton's first race in red. Newcastle and Liverpool clash in the Carrabout Cup final. Sunday is war to war with incredible football, including the old firm showdown between Celtic and Rangers and a fierce London Derby as Arsenal host Chelsea. Then Golf's elite ring guaranteed drama at the players championship.

The March big weekend. Get Sky Sports available with no contract on now. 18 plus UK only, broadband 2.5

megabytes per second required. For nurses and doctors, their oath to do no harm is a guiding

principle that shapes their daily

care for the sick and helpless. After working at a nursing home and witnessing abuse at the hands

of those who promised to care for patients in need, Amy Lachran took it upon herself to pursue

a career in nursing. She became an ICU nurse at Somerset Medical Center in New Jersey,

protecting and healing the sick and vulnerable.

Not every day is a good one, but Amy knew she could always count on her friend and fellow nurse, Charles Cullen, for a laugh.

One day, Amy was approached by detectives who were investigating a mysterious

string of deaths at the hospital. What she didn't know was that the man behind the scrubs,

her daily companion and colleague, was secretly one of America's most prolific serial killers.

I'm Emily Campano, and this is the Fox True Crime podcast. Charles Cullen's nursing career spanned over 16 years and 10 hospitals and nursing homes.

Cullen is confirmed to have murdered 29 patients throughout his employment, although many experts

believe he is responsible for the deaths of hundreds more.

Due to his access to medications, Cullen was able to secretly inject lethal doses of drugs

such as insulin and digoxin into the ivy bags of his patients.

In 2003, investigators began to take a closer look at the suspicious deaths at the hospital,

and they came to Amy for answers.

Although the discovery of Cullen's actions was heartbreaking,

Amy ultimately agreed to aid law enforcement in their investigation

to protect the lives of countless more patients.

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