When you Watch Teen Wolf Season 5 Episode 10 Online, you'll discover what Parrish is - a hellhound. Lydia puts it together right before the life ruining jerk Theo shows up and knocks her out. You will not get away with this, Theo! Then, Theo's on to his next target. He traps Scott in the library with some wolfsbane. Yup, that's right! Theo can touch and use wolfsbane because he's a chimera. The first one, actually. He isolates Scott from everyone, well not everyone because Liam shows up and he's ready to kick Scott's ass. Meanwhile, Hayden is dying without her sister or her boyfriend at her side. Liam, you need to sort out your priorities. Mason shows up just in time to keep Liam from killing Scott, but he brings bad news. Hayden died. Braeden has returned! Man, isn't she a sight for sore eyes? She tells Malia that her mom is coming for her to finish the job she started so many years ago. We're gearing up for a Desert Wolf versus Malia showdown. Theo kills Scott. Yeah, right, you didn't really think Scott would die did you? Melissa revives him, but the damage to Scott's pack is not something Melissa can fix. Stiles finds his dad in bad shape. Theo uses Lydia to uncover the location of the Nemeton, and he takes her there so that she can see him revive all of the fallen chimeras.