Isobel checks in with OA about how Maggie's doing.

They agree to keep an eye on her.

A man insists on walking his reluctant date to her door.

They hear a woman screaming and the man pulls his gun and runs to check.

The woman calls the police and hears a shot.

She finds her date shot dead.

The man was Will Douglas, a security guard at the FDIC. So the FBI gets called in.

The woman who screamed is missing, likely taken by the shooter.

Denise Parker is 8 months pregnant.

Denise's Social Security number belongs to a 70-year-old woman who died six months earlier.

Denise's baby daddy is Arturo Reyes from Colombia, whose visa expired six months ago.

Scola and Tiffany pick up Reyes.

But he's just doing deliveries for Eric Webb, a hedge-fund manager.

He's married with a prenup that would cost him a bundle for infidelity.

Tiffany and Scola discover three people tied up and gagged at Webb's home.

It was the Webbs and their housekeeper.

A gunman had forced his way in that morning and began asking questions about their surrogate, Denise.

They gave up Denise's address to him.

Kelly finds the kidnapper's plate number on surveillance.

The van belongs to Derek Keating.

A  man resemblling the shooter is at Keating's house and starts shooting at Maggie and OA, eventually escaping them.

Keating admits it was his son, Travis.

He hadn't seen Travis for months. Travis showed up wanting to borrow his van.

Tiffany and Scola chase Travis into OA's arms.

Travis tells OA that the family is going to cleanse Denise and make her pure again.

Travis is linked to Divine Witness LLC, operated by Pastor Aaron Mamet.

Denise is Mamet's daughter.

An active case on Mamet is sealed by ATF.

ATF Agent Roberts explains that Mamet is a leader of a radical cult known as the Sacred Testament.

There's a stockpile of weapons at the cult's compound and ATF doesn't want it to turn into another Waco.

They locate proof on surveillance that Denise is at the compound.

Isobel informs Roberts they will attempt to rescue Denise if they spot her.

Scola, OA, and Maggie infiltrate the compound in a produce truck.

OA and Maggie hunt for Dense while Stuart unloads the food.

They find Denise in an upstairs bedroom. She's chained to a bed.

A boy delivering a meal to Denise sees Maggie and runs to a guard.

They struggle and he shoots, with Maggie falling. It was a ruse, as the bullet hit her vest, and she shoots him.

The outside alarm goes off. The cult males arm themselves.

Isobel overrules Roberts and readies the SWAT team to invade the compound.

But Mamet places the women and children in the line of fire.

Jubal orders OA to take Mamet into custody, to talk his people down. OA shoots and wounds Mamet.

He convinces Mamet to tell his people to put down their weapons. Then SWAT charges in and arrests the cult.

OA suggests Isobel force Maggie to take some time off after her close ball at the compound.