ACTRESS TOOK POISON’SYDNEY. Monday. — A television actress. Miss Sue Costin. had died after taking poison, the Coroner, Mr F. Mackenzie, found today.Min Costin. 23, badbeen found dead in a motel room at Paddington on April 5.She had starred in the television series 'Riptide', screened by Channel 7.Mr Athol Patterson of East LindfieJd. Min Costin'* uncle, aaid she badbeen highly atrung and suffered fits of depression.She had received psychiatric treatment but he bad had no knowledge of any suicidal tendencies.She bad been studying arts at the University of NSW at the time of her death.She had been on good terms with her family and bad lived with her mother.Sergeant E. Cox. of Paddington Police, said two | small capsules had been found in the motel room.