Complex sentence: It is then that Rajesh finds out that Shekhar and Meena are having an affair, and his old murderous and possessive hatred surfaces again and his best friend Shekhar's life is in danger.
Split into simpler sentences: It is then that Rajesh finds out that Shekhar and Meena are having an affair. His old murderous and possessive hatred surfaces again and his best friend Shekhar's life is in danger.