Guilt trip material

"Sir, what will we do with the kid?" 

"Send him back, " Salvatore ordered. "It has been three days already. Nico has been looking for his boy. However, the woman will stay. She will pay for touching my sister." 

First of all, he did not want to hurt the boy. Secondly, there was no point in keeping the boy because Nicolas did not have Sophia. Nobody knew where she was or how she was. 

He found out through his investigation that the boy was Nicolas's illegitimate son. Nicolas had a relationship with a woman who got pregnant and gave birth to his son. She never informed the child's birth to the father until her very last breath. When the kid's mom died, the kid came to live with his birth father who treated him well. 

The woman Salvatore had imprisoned came as a nanny for the boy but when she realised the effect that she had on Nicolas, she played her shot and the rest is history.