The actress playing undercover DEA agent Sophia is given to blush patterns (stress related?) on her neck and chest. For the interview scene, there were clearly at least three shooting phases (of increasing stress?) which were later inter-cut to match the script. The jumps in blush pattern are obvious. Continuity and makeup did not notice and correct this.
When Michael is in his car and on the phone with his mother about the coffee pot, we hear him say the pot was made in "1967," but his lips say "1972."
About 24 minutes in, when Michael's mom hugs him as thanks for the new coffee maker, the reflection of a person can be seen at the right hand edge of the screen. It's not mentioned that there's anyone else at the house.