A 42-year-old woman, Anilkumari, her 14-year-old son Abin, and her 44-year-old live-in friend Hemanth were found dead in their rented house at Kadappakada here on Friday morning. The police said that Hemanth and Anilkumari had been living together for the past three years after having separated from their spouses. Anilkumari works as a head nurse at the district hospital here. Preliminary investigation shows that it was a suicide pact, probably after killing Abin. Both Hemanth and Anilkumari had marks of injection on their hands. Anilkumari had a syringe on her hand. Hemanth was working as a manager at a hotel.