The sound of a door opening alerted the Doctor to spin on heels just in time to catch the Master and his ridiculous quip. "H-How!?" His mouth was open and brows were deeply furrowed as he stood his ground.

"Impossible!" Currently, communication beyond one worded statements was just as impossible for him upon seeing the Master before him. Consciously, he licked his lips before speaking, "I don't understand. You died you refused to regenerate! You were in my arms; I saw your body burn."

Before he could speak anymore, the synthetic sky flashed orange, such as in a pulse-like manner from blue to orange and continuing. "An alarm system..." The Doctor looked up, watching.