The Walking Dead: Torn Apart  is a six-episode web series which explores the back story of Hannah, better known as "Bicycle Girl." 

Bicycle Girl appeared in The Walking Dead's Season 1 episode "Days Gone Bye."  Sheriff's deputy Rick Grimes encounters a badly decayed female walker lying beside a bicycle in a park. Later, he returns to mercifully shoot the walker in the head. Who was this woman? How did she become a walker? 
You can watch all six episodes below, and learn about Hannah's life before the apocalypse, her struggle to survive and protect her family and her ultimate demise into zombie-hood.

 In episode one Hannah awakens to find her kids missing after a violent car accident.

“Family Matters” Hannah has an emotional reunion with her kids and seeks refuge in her ex-husband Andrew’s home. While tending to her wounds, Hannah and Andrew try to make sense of the chaotic new world that surrounds them.

“Domestic Violence” Judy’s effort to save a stranger leads to a deadly encounter with Andrew.

"Neighborly Advice” Andrew goes to his neighbor Palmer’s basement in search of guns and supplies. Once there, the two have a man to man conversation and finally come to an understanding with one another.

“Step Mother” Hannah and Judy struggle for control of the children.

“Everything Dies” The family makes a desperate attempt to get to safety amid a rapidly growing swarm of walkers.