When another woman 's baby dies in her care she is charged with murder and has to go to prison .
Laura Blundy spends the following 18 years of her life in the streets of London .
When another woman 's baby dies in Laura Blundy 's care Laura Blundy is charged with murder and has to go to prison .
Laura Blundy spends the following 18 years of her life in the streets of London .