 In the present , Scully phones Parenti , who is dissecting an alien fetus . She asks him to compare her ultrasound scan with the one given to her earlier . When she visits later , she is assured her scans are in order , but she sees Parenti speaking with Dr. Lev , the doctor she overheard at Zeus Genetics . Walter Skinner ( Mitch Pileggi ) and Doggett confront Duffy about threatening letters he has been sending to both Mulder and Dr. Lev . However , when the agents leave , Duffy makes a phone call to Lev , warning him that they are being investigated . Back in the past , Scully asks Mulder to be the donor and he accepts . 
