He turned to smirk at her, and she rolled her eyes. “Don’t, Potter.” She snapped. “You know what I meant. Are you absolutely mad?”
“Probably.” He shrugged, disappearing briefly into the bathroom. He emerged almost immediately, dressed in blue jeans, a plain white t-shirt, and a brown leather bomber jacket. “Harry, Remus Lupin and I were coming back from living in the States.” He said quietly, sitting down on the bed. “It was a couple of weeks before his eleventh birthday. We planned to settle in, take stock of the situation before contacting potential allies. I think Dumbledore had some kind of tracking charm on Harry, to make sure he was at Lily’s sister’s house -Petunia, not Mari, according to Remus.”
“Why the fucking hell was Lily’s son anywhere near that Muggle?” She demanded. “Lily didn’t mention anything about Mari for her own safety, but Petunia and she vehemently denied the other’s existence after Hogwarts, and possibly before. How did Dumbledore even know she had a sister?”
“Muggle born.” James pointed out. “It was in her school records.” He scowled. “Remus said that Dumbledore gave him some convoluted reasoning about blood wards due to Lily’s sacrificing her life to save Harry. “ He held up his hands in defense as she lifted her lip in disdain and opened her mouth to protest. “I know! That’s not the only bone I have to pick with the old man. My point is, we were traveling by Muggle airplane, not Portkey, so he must have put some kind of tracking spell on Harry to monitor his location. I don’t know why it only worked when we returned to Britain, and not when we left, but we were ambushed outside of Diagon Alley, not long after we met you and Draco in the robes shop. I would deduce that Dumbledore took Harry back to the Dursley’s and took me – ‘Remus’ – here. Hopefully he dosed him before the Polyjuice wore off—well, he had to, or we wouldn’t be sitting here having this conversation.”
“And how did you deduce that brilliant solution, Sherlock? The real Lupin is currently teaching Defense Against the Dark Arts at Hogwarts, you utter buffoon!”
“Oh, come off it, ‘Cissa.” He said impatiently, stretching. “It worked, didn’t it? And Dumbledore knows Remus is a werewolf, obviously, and they’re harder to dose accurately. He probably assumes that the potion wore off, and modified Moony’s memory to match.”
“First of all, don’t call me that. You have never called me by my first name, so don’t you dare start now.” She snapped. “And you absolute and complete son of a swamp troll! I was actually referring to the part where you didn’t tell anyone about your mad plan of escaping death!” She shouted, getting in his face. “OR the fact that in the past twelve years, you didn’t contact me once to let me know that you were alive! We have a son together, James Potter, you arrogant fool! My best friend, your wife, was dead! I was alone, grieving, trapped in a loveless, empty marriage with a man I despised, and no one left whom I could trust with my secrets!”
He pulled her into his arms as she shoved at him, absorbing the blows as she burst into tears. She fought his hold, but he persisted until she yielded, sobbing silently into his shoulder. Resting his chin on top of her head, he could only wait and hold her, as his heart broke.