Well, for one thing, we could see what the father did with other women on the island and what happened with his secretary.
A possible subplot could be:
How GG is harassed, possibly raped, by her boss and her husband's "friend."
Or There might be a second part that delves deeper into the story of GG, Jamal, and the gang after her husband's murder is solved.
The current MC could move out or remain as a cuck, perhaps even forced to have sex with his mother after Jamal and the other gang members had sex with her while GG is more or less unconscious.
If the MC isn't a cuck, Nora could be used by the gang to distract the MC, leading to sex between them where Nora dominates and humiliates the MC.
After Nora's death, the MC could fall into the clutches of his father's organization, and it will be interesting to see if he survives or if that's the end of him.
And how would GG react to the potential death of her son ?
Would she sink even deeper into the swamp of sex and humiliation, or would she kill herself because she can no longer bear her life without her husband and son?