'Shades of Blue' Season 1 episode 2 spoilers: ‘Original Sin’ shows dark secret from Harlee’s first encounter with Wozniak

"Shades of Blue" promises to keep the audience on the edge of their seats with its second installment, top billed by Detective Harlee Santos (Jennifer Lopez) and Lieutenant Matt Wozniak (Ray Liotta). The upcoming episode will also feature FBI Agent Robert Stahl (Warren Kole), Tony Espada (Vincent Laresca) and Tess Nazario (Drea de Matteo). The main storyline of “Shades of Blue” episode 2 deals with secrets and suspicions.

Spoiler alert! This update contains more "Shades of Blue" spoilers. Read on at your own risk if you have not watched the latest episode.

TV Guide reports that on Thursday’s episode, Tony will lend a hand to Tess about her philandering husband. Meanwhile, Wozniak’s suspicions will grow about a rat in the team as he sees informants everywhere. To pacify him, Harlee tells him to subject everyone in a lie detector test. Wozniak will handle an appeals case that will cause him to watch tapes showing how he first met Harlee. According to spoilers posted in IMDB, a dark secret will also be uncovered.

“Shades of Blue” also posted a sneak peek of its Jan. 14 episode on its YouTube page. The preview will show Harlee lashing out at Robert, saying there’s a leak about their covert operations. “Someone’s talking,” Harlee says. “My life is at risk because of you. My daughter’s future is at risk because of you.”

Another scene will show Harlee undergoing a polygraph test. At the last part of the preview video, Wozniak will be seen saying, “I don’t need you to confess. I’ve already got you.”

"Shades of Blue" soap recap

In its pilot episode, the show offered an overview of how Harlee and Wozniak work together with a team at the 64th Precinct in New York. In the course of their police duties, Wozniak and his team keep drugs off the streets by forging a deal with the criminals. In exchange of letting them operate somewhere else, the gangs give Wozniak extortion money, which he generously shares with his crew. Harlee benefits from these “extra-curricular” activities, but still struggles financially especially in terms of her daughter’s tuition in a university.

The first episode also showed how the FBI’s anti-corruption unit, through Agent Stahl pressured Harlee to be a mole for the FBI. Harlee has to provide relevant information about Wozniak and his team’s shady dealings, and in return, she would be given full immunity.

A close encounter ensued when Stahl bugged Harlee using a wire and a camera on her necklace before she went to Wozniak’s barbeque party. Wozniak confided to her that there’s a mole in their team. Fearing for her life, Harlee prepared to pull her gun out, but stopped when Wozniak asked for her help to kill the informer. Wozniak said Harlee is the only person he can trust.

Source: YouTube/Shades of Blue

Find out what happens next on “Shades of Blue,” which airs every Thursday at 10/9c on NBC.