Tosh was also transported back in time with Jack by Bilis Manger's manipulation of the Rift. Because she was the only one who knew how Torchwood's Rift-manipulating machine worked, she had to complete the formula that was stored on her computer and figure out how to communicate with the team sixty years in the future - which she did by writing on a card with her own blood. The team brought her and Jack back, and they then had to confront the threat of Abaddon being unleashed on the city. Jack sacrificed himself to defeat the creature, then disappeared after he came back to life - to travel with the Doctor, though the rest of the team had no way of knowing it.
The rest of them went on without him, because what else could they do? However, a few months after Jack's disappearance, they were sent to the Himalayas by the newly-elected prime minister, Harold Saxon. There, they were buried under an avalanche, taking days to dig themselves out, by which time Saxon had already been killed and the government was more or less back to normal, or as normal as the government gets in the Whoniverse (not very).
The team continued working without Jack - until a month or so later, when he suddenly reappeared in the middle of a hostage situation, shooting the alien blowfish holding a civilian hostage in the head. Shortly after that, John Hart, another ex-Time Agent, and an ex-boyfriend of Jack's, appeared through the rift, tricking the team into searching for five bombs scattered throughout Cardiff. This, however, was a ploy to get into the Hub unguarded and loot the blowfish's corpse. Tosh and Owen narrowly saved Gwen from death (she had been paralysed by John's lip balm), then returned to the Hub to catch John in the act. Unfortunately, John was tricked by an ex-lover of his, and wound up with a bomb attached to his body - in a panic, he kidnapped Gwen and fled. Torchwood destroyed the bomb by fooling it with a cocktail made of the team members' DNA, then bade farewell to John - just afterwards, the detonation of the bomb sent a shockwave through the Rift, sending them all back in time twenty-four hours.
Their next assignment involved the mysterious case of two dead burglars and the only witness to their intrusion (and consequent murders), a woman named Beth. She was incapable of remembering what had happened that night; a psychic probe revealed alien technology under the skin of her right arm - she was a sleeper agent from an alien society. Torchwood used Beth to track other sleeper agents who had suddenly gone active, deactivating the rest of them and barely saving Cardiff from the detonation of nuclear warheads. Beth was the last one left; she used her last shred of humanity to threaten Gwen, forcing the rest of the team to kill her so she wouldn't have to live knowing that she was an alien.
Re: Toshiko Sato / Torchwood / 3 of ?
The rest of them went on without him, because what else could they do? However, a few months after Jack's disappearance, they were sent to the Himalayas by the newly-elected prime minister, Harold Saxon. There, they were buried under an avalanche, taking days to dig themselves out, by which time Saxon had already been killed and the government was more or less back to normal, or as normal as the government gets in the Whoniverse (not very).
The team continued working without Jack - until a month or so later, when he suddenly reappeared in the middle of a hostage situation, shooting the alien blowfish holding a civilian hostage in the head. Shortly after that, John Hart, another ex-Time Agent, and an ex-boyfriend of Jack's, appeared through the rift, tricking the team into searching for five bombs scattered throughout Cardiff. This, however, was a ploy to get into the Hub unguarded and loot the blowfish's corpse. Tosh and Owen narrowly saved Gwen from death (she had been paralysed by John's lip balm), then returned to the Hub to catch John in the act. Unfortunately, John was tricked by an ex-lover of his, and wound up with a bomb attached to his body - in a panic, he kidnapped Gwen and fled. Torchwood destroyed the bomb by fooling it with a cocktail made of the team members' DNA, then bade farewell to John - just afterwards, the detonation of the bomb sent a shockwave through the Rift, sending them all back in time twenty-four hours.
Their next assignment involved the mysterious case of two dead burglars and the only witness to their intrusion (and consequent murders), a woman named Beth. She was incapable of remembering what had happened that night; a psychic probe revealed alien technology under the skin of her right arm - she was a sleeper agent from an alien society. Torchwood used Beth to track other sleeper agents who had suddenly gone active, deactivating the rest of them and barely saving Cardiff from the detonation of nuclear warheads. Beth was the last one left; she used her last shred of humanity to threaten Gwen, forcing the rest of the team to kill her so she wouldn't have to live knowing that she was an alien.