The Good Boy - S4-E3
Continuity mistake: When Cal Ritter's wife comes to his furniture studio to talk with him, the clock shows the time as 4:45. After they talk for two minutes, the security guard enters and says, "It's 5:00 and my ride's here. I just want to let you know I'm leaving."
Other mistake: In a newspaper article about an overnight break-in and robbery at a bank, three paragraphs in the first column are repeated in the second column.
Continuity mistake: Julia's hands go from being on her accomplice/boyfriend's cheeks to around his neck, then back to his cheeks in one shot.
Answer: If it was ever found out that she was at Terry's house before he was killed, there's a possibility that a lot of people would have begun to suspect her of murdering Terry. By claiming that she wasn't, she was hoping that people wouldn't accuse her of the murder.