Smothered

"Smothered" is a first season episode of the television series Law & Order: Criminal Intent.

Plot summary
In this episode, Detectives Goren and Eames are investigating the murder of a pregnant woman who was struggling to stay clean from drugs.

At first sight, Goren and Eames first suspect the victim's unstable junkie boyfriend, who is dominated by his wealthy socialite mother. The detectives discover the man would financially benefit from getting rid of his girlfriend, but they are not convinced it's that easy.

Then, the detectives chase down blind alleys, unaware that their quarry is a cold-blooded mastermind. Goren soon finds a web of family secrets that lead him back to the suspect's mother as well as her husband.