Reader Question – The book where she thought her baby was stillborn but her husband gave it to his stepsister…

Zohra needs our book help! Oh my!!!! Psych-thriller & marital strife AND a sordid affair to boot? This sounds right up my alley, and while this description below gives a ton away, it makes me want to read it because it’s book #1 in a duet and I have NO idea how book #2 goes. So now I want to know too.

She asks:

Can someone please help me find this title. It’s a psychological thriller.

The book consists of a couple who had a child. The wife thought that her child was a stillbirth as her husband told her but she never stop suspecting that the child might be alive.

Years later she finds out that her child was not stillbirth but still alive and that her husband had given the child to his stepsister with whom he had an affair with in the past. The wife discovers a video about the stepsister and husband relationship for the past year when they were both young.

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The wife finds out that not only did her husband gave her child to her stepsister but also in the past had an intimate relationship with the stepsister to this point that he forced the stepsister to do an abortion which caused her a misfortune and she could no longer get pregnant so as revenge she had asked for the wife’s child to be kept with her.

She raised the child to hate his real mother. The wife confronts the stepsister and husband but the stepsister pulled out a gun and aimed at the wife but accidentally hit the husband. Luckily the police arrived and arrested the stepsister.

The wife sees her child but the child hates her now as the stepsister made him hate that woman whilst growing up.

I think the child is five years old. The book is a duet.

Anyone have a guess?