Jack had been a touch suspicious when, a week ago, even though he’d had a massive shaggy border collie shed all over him, his allergies hadn’t acted up. No reaction in his sinuses, no watering eyes, no pounding headache from the shift in his mucus. None of it. So he’d sent away for testing, called on a few favors back from Hydra, and when the results came back, he’d been floored, had to sit down for a while. The Super Soldier Serum. In his blood? It was ridiculous, so far-fetched, he’d never had an injection of it.
But he knew exactly who was responsible for it, so when he heard the sound of the door to their apartment close - and thank goodness his sister had taken their kids for a date night, because they didn’t need to see this - he came out of the kitchen and crossed his arms, glaring a little at James. “Care to explain how it is that my last blood test turned up the serum, liebe?”