
Mossman, however, is unrepentant, saying that she only ever had Eli's best interests at heart, and believed that only by cooperating with the Combine could Eli's life be spared and his scientific aims be fully realized.

They successfully trap Mossman in her engineering lab before confronting her with the evidence of her betrayal. Mossman is shown to be very unhappy with the Combine's treatment of Vance Breen seems to have promised not to harm Vance when assaulting the Resistance position but without Freeman being present, Breen's patience wears thin, later telling Mossman that he did not feel bound to this agreement.ĭuring Freeman and Alyx Vance's incursion into Nova Prospekt, they observe the transmission between Mossman and Breen revealing her duplicity. They are able to capture Eli Vance however, Freeman himself is able to escape in the ensuing chaos. She also intends to deliver the Anticitizen directly to Breen, but the Combine have followed Freeman to the base and attack ahead of her signal. Upon Gordon Freeman's arrival at Black Mesa East, Mossman takes him down to Eli's lab. She also leaked the secret of local teleportation to the Combine, a technology they had previously lacked.Įli and Mossman telling Gordon how they are pleased he is back, somehow mirroring one of the first Half-Life 2 screenshots. How and when she took on this role is not known, but Breen's impatience with her and his remark that the Combine "could have taken at almost any time in the last several years" suggests that she acted as a double agent for some time before Freeman's reappearance. Unbeknownst even to Alyx Vance, who disliked her, she also spied for the Combine, and reported directly to Dr. Years after the Combine invasion, Mossman became an important member of the Resistance base Black Mesa East, where she partnered with Eli Vance in making scientific advances to aid the Resistance war effort.

She applied for the same post as Gordon Freeman at Black Mesa, but lost out to Freeman's Innsbruck experience (as said by Eli Vance in Black Mesa East) and Isaac Kleiner's personal recommendation. Before the Black Mesa Incident, Mossman was a promising, up-and-coming research scientist.
