The Sun :
AMY WINEHOUSE's furious father is convinced a "pal" sparked her string of terrifying fits by spiking her drink with the killer drug ecstasy.
And last night he vowed to find out who was responsible for landing the troubled singer back in hospital once again.
Amy, 24, was rushed to A&E on Monday night after her distraught dad found her convulsing.
It was originally thought she had suffered a reaction to medication she was taking to help her quit Class A drugs.