Her husband was very charming, especially with women, said Madam Jeleha Haji Said.
At work, he was especially close to Mimi Wong, the cabaret queen who stabbed and killed her Japanese lover's wife in 1970.
After a marathon 26-day trial in 1970, Wong became the first woman to be sent to the gallows after Singapore's independence.
She was hanged on the morning of July 27, 1973, along with her sweeper husband Sim Woh Kum.
In prison, she was a difficult inmate who would at times strip naked and refuse to put on her clothes even when ordered by prison guards. She even threw urine at the wardens, said Madam Jeleha.
"Darshan was the only one who could control her. He would say 'Mimi, wear the blanket and cover yourself. Don't do this or you won't be beautiful any more', and she would listen to him," Madam Jeleha said.
The two forged an unlikely friendship and other prison officers even joked that Wong was his girlfriend. Mr Singh never minded.
Before her execution, Wong told Mr Singh they should be lovers in the next life and she wanted to take him with her.
"After he hanged Mimi Wong, he fell very sick for a month. He was in Toa Payoh Hospital for more than two weeks," his wife said.
Even when probed, he refused to tell his wife about Wong's final moments.
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