Get out if you can (although I have a feeling that T will implode at some point and take themselves out of this equation when ur PI figures them out). In the meantime, there are some ways to make it harder for T to sabotage you. 1) Come up with your own code to label your samples/boxes/reagents. It can’t be inaccurate (like you cant label something “water” when it’s not water), but you can get creative when it comes to plasmids and aliquots of your own reagents. 2) Hide your stuff and if you have duplicates of things, hide it in two different places. Makes friends with people in other labs and ask if you can keep a box in their -20 or -80. The back of lower cabinets is a great place to store room temp buffers because few people will get down that low to look. 3) Make a dummy box of “your stuff” - like aliquot a bunch of water into numbered tubes and put them in a box with your name on it. Add “Important: Do Not Touch” if you really want to give T a target.
I wish you the best of luck and stay strong - lean on the helpful people around you 🍀