In the first scene Julie (played by Sheridan Smith) is seen talking with Karen (Gemma Whelan).
She asks: "You won't lie to the police? Or to us?"
Later on, Julie is in tears in a church and is asked: "You haven't lost your faith in people, have you?"
The full extent of Karen's deception will be revealed as the police discover the kidnapping was planned by the mother-of-seven and her boyfriend, Craig Meehan.
The Moorside episode two trailer sees Julie Bushby grow suspicious of her friend Karen Matthews
The Moorside: Viewers praised the performance and especially Sheridan Smith's acting
You won't lie to the police?
After The Moorside aired its first episode last week, viewers flocked to social media to praise Sheridan's performance.
One viewer gushed: “@Sheridansmith1 you really are one of the best actors this country as ever seen can't wait for next Tuesday super talented lady.”
“I have to say, @Sheridansmith1 is by far the best actress on our screens at the moment… fantastic performance tonight!,” another wrote.
A third said: “Another brilliant drama with the even more brilliant @Sheridansmith1, I can't wait for next week #moorside.”
The 35-year-old was also praised by Julie Bushby herself for her honest portrayal.
The Moorside will conclude with the full extent of the lie being discovered
Moorside: The real story
Tue, February 7, 2017
Moorside: The new BBC drama follows Sheridan Smith, as Julie Bushby, in the search for missing school girl Shannon Matthews. Here's the real story behind the programme.
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However, Shannon Matthews' grandmother has hit out at the BBC for making a drama out of the traumatic events surrounding the nine-year-old's disappearance.
June Matthews, 73, told the Daily Mail: "Shannon deserves to live her life in peace. She deserves to be left alone.
"What happened to her was a trauma, a tragedy. It is sick and disgusting that it is being turned into a TV show. It isn't entertainment. It's real life and it hasn't even been 10 years since it happened."
The Moorside concludes next Tuesday at 9pm on BBC One.