Spoiler alert: Greeks Bearing Gifts
Beta-ed: GlassSplinter
Jack was worried about Ianto. The young man was acting oddly. He knew Ianto was beaten up because of the cannibal incident, but his recent behaviour wasn't explained by it, and Jack didn't like when his friends acted out of character. Like Tosh the last the couple of days. He didn't know which one concerned him more. Tosh with her out of character questioning, or Ianto with his sudden appearances. It seemed to him that the young man was everywhere.
It seemed to Jack that Ianto was following him. He couldn't shake the feeling that he was always there in the corner of his eye. Normally, he liked Ianto's discreet nature, but with his experience people constantly positioned behind him made him uneasy. The strange thing was that he hadn't felt discomfort from turning his back to Ianto before. Maybe it was because of the utterly inexpressive face he wore around. His face wasn't inexpressive anymore. It seemed like emotions had cast shadows on his forehead, but Jack couldn't figure out which those were. He was used to reading people like a book, but the Welshman has proven to be closed up before him. He held a Cyberwoman in the basement for months. He still couldn't believe he was oblivious to that.
On the other hand, Tosh's uncharacteristic attention is focused on that alien technology they found. That's something he could do something about. The darn thing was more familiar then he would like to admit. After all, he had been at both ends of it.
And if Ianto decides to kill him after all, he can revive one more time and deal with it later. At least that way he will find out if the young man shares the feeling of friendship or it was all faking. He hates when someone he thought was a friend kills him, but he's gotten used to it in time. He even began to review after waking, was the reason for killing him strong enough and justified. If it was he'd carry on like nothing happened. After all, eternity is a very long time to hold a grudge; people die too quickly for that. Later on, he misses them in spite of their betrayal. He understood betrayal all too well.
Toshiko has left early and he put the team at alert. If he was the one influencing Toshiko he would move fast when the right moment came. She was just open and scared enough to trust that someone who is tearing hearts out. The game was to catch that window before all the truth comes spilling out.
The woman's beauty took him by surprise. Tosh was obviously smitten by her, he could see why. Mary wasn't afraid of them, she even put up a speech for them all. Jack didn't need her words. One look in her eyes was enough. Even if he didn't see the bodies, her look told him that her blood lust wouldn't ever be satisfied.
He pressed the button while looking in her eyes. He could lock her in the cells or think of something else, but his sentence was swift for Tosh's sake. He loved Toshiko and didn't want to put her through all that misery that comes when you have to watch someone you love in chains. Somehow, when you love all of someone, bad deeds don't kill the love; they only put you in an endless loop of deciding between forgiveness and damnation. Either way, you're stuck in a limbo wondering whether you made the right choice. That's why he made the choice for Tosh. It would be easier for her to cope without that burden.
On the other hand, Ianto carried on with his odd behaviour. No knives were sticking out off his back, nor was his coffee sweetened with poison, so he got used to the presence. It wasn't all that uncomfortable when the young man leaned behind him.