Editing Desmond Miles (section)

===Rescuing his father===

:'''William''': "''You never should have come here. You put everything on the line - for, what? So you could rescue your father?''"
:'''Desmond''': "''Yeah.''"
:—William and Desmond, upon William's rescue.

After Desmond experienced more of Ratonhnhaké:ton's memories, the Assassins were sent a video message by Warren Vidic, who explained that Abstergo agents had intercepted William at the museum and brought him to Abstergo's Roman facility. Vidic stated that in order to let his father free, Desmond would need to hand over the Apple of Eden. Soon after, Desmond traveled to the facility with Shaun and Rebecca.

Upon his arrival at the building, Desmond was offered a peaceful trade-off by Vidic over the intercom, but he refused. Desmond then fought security guards as he made his way to the building's upper floors, eventually arriving at the Animus room he had been held captive in, months before. There, Daniel Cross yet again confronted Desmond, ordering that he hand over the Apple. Before Daniel could shoot Desmond however, he suffered from the Bleeding Effect triggered by the Apple, causing him to suddenly speak in Russian. Panicked, Daniel fled and Desmond gave chase. Eventually, the two ended up in the room for the Templars' Animi Training Program, as Desmond caught up to Cross and assassinated him, and retrieved his gun.

Desmond proceeded to ride an elevator up to the fifth floor, where Vidic's office was located, killing any security guards that crossed his path. As Desmond made his way towards the office, Vidic explained his anger over intercom, stating that Daniel was like a son to him, and that Desmond and the Assassins only took what did not belong to them, such as the Apple of Eden and Lucy Stillman's life. Eventually, Desmond made his way to Vidic's office, where William was detained. After Vidic told Desmond to give him the Apple, Desmond used it to control the security guards in the room, forcing one to shoot and kill Vidic before then influencing them all to shoot themselves.

After freeing his father and hugging him, Desmond took the third power source and left the building, using the Apple to cover them. Once he arrived back at the Temple, he placed the power source in its slot, received the details of the last two solutions the First Civilization attempted, and then re-entered the Animus.