Dollhouse

A secret facility, the Dollhouse, erases the personalities of Echo and her fellow `actives' so they can assume any relevant personas they may be assigned in engagements that cater to the wealthy, powerful and well-connected. After each assignment, the actives are subjected to another personality wipe so they can enter the next scenario with no memory of an earlier one. At least, that's the plan - but as the series unfolds, Echo's memory begins to return, and she slowly starts piecing together her true identity.