Coronation Street has seemingly confirmed that Tracy Barlow will survive Rob Donovan's desperate attempts to remain a free man ahead of an armed siege taking place next week. The former couple were reunited in scenes aired on the ITV soap this week after eight years. Rob returned to Weatherfield weeks after going on the run and looked to his ex-fiancee for help. While she reluctantly agreed to help Rob, who was in a bad way as he started bleeding on the sofa, Tracy found herself on the other end of the escaped prison's despair. He was seen weilding a gun and demanded she call his sister Caral Connor, weeks after they last came face-to-face after he had become her kidney donor. Spoilers have already confirmed that a character will be injured in the upcoming siege as Rob takes both Tracy and Carla hostage in Ken Barlow's beloved No.1 Coronation Street. But now a new preview clip has provided a clue as to who the victim of the dramatic stand-off could be - or more so who it can't be as Tracy is nowhere to be seen. In the new clip, for scenes to air on Tuesday (March 25) as Rob rages at Carla with her pleading: "I didn't know Tracy was going to do that!" But an increasingly angered Rob shouts that she's a "liar" while keeping the gun in his hand. While no more details about Tracy are uncovered, seconds into the clip Carla's girlfriend DS Lisa Swain arrives, slowly walking in to Ken's living room and telling Rob not to shoot Carla, before seemingly taking Tracy's place as a hostage. It is presumed that Tracy has swaped places with Lisa and fans think they know what may lead to Carla claiming to have no idea about Tracy's actions. @TheConnorSwains asked: "Has Tracy done a Tracy and legged it? #Swarla #Corrie." @denisedc73 said: "O yer ...I'm definitely on the Choo choo train after seeing this ...Tracy has gor out and Lisa has gone in....as I expect....Lisa taking the bullet #swarla." @PinkWelshGirl11 shared: "OMG so it looks like Lisa swaps places with Tracy so it IS one of these 3 that gets shot?? #corrie #swarla." @NicolaHynes1 posted: "So looks like Tracy has somehow managed to alert the police and get out the house. The favt Lisa has locked the door noone else is getting in unless they break the door down. Omg I'm.excited." @topcac commented: "‘Killing a hostage would add years’ Can we safely assume that a) Tracy is not there (and probably called the cops) and b) he didn’t shoot her (hence this line above, if he had shot her Lisa probs wouldn’t know if he’d killed her so wouldn’t be able to say this to Rob) #Swarla." @LisasCrisps added: "Tracy's gonna do a runner isn't she! She'll contact the police and Lisa will find out and come running to save her woman! I'm no longer scared for Tracy but I am TERRIFIED FOR THE CONNOR-SWAINS! #Swarla #Corrie."