the manufacturers are outsmarting the government. as soon as one drug is banned they change their chemical formula and create a new drug that's still legal. >> it's like whack-a-mole. they pop their head up, we hit them, they go down and pop their head up another spot. >> reporter: do you think a lot of young people think legal means safe? >> absolutely. >> reporter: as police videos show the new drugs are dangerous and sometimes tedly. >> (screaming) >> you can't even imagine the horror of hearing that news. >> reporter: susan wadsworth's son noah was an honor student and a talented musician. ♪ sailing around the world -- >> reporter: on a night out with friends in january he took a drug which mimics lsd and quickly lost consciousness.