Department of Defense agent Cooke hires Scorpion to test their security system by attempting to break into Fort Knox and steal a 300-year-old Prussian scepter, proving that their depository is not run properly by a private firm. Despite Tim and Cabe distracting the military and interrupting their mortar test, Walter's party is apprehended and must hurry to overpower the private guard and dodge the booby trap. They discover half a pound of extremely toxic polonium hidden inside the artifact and must escape the buildings' traps with it intact. Dodgy attorney Haywood wins his first case by helping gain more time while Ralph proves in court that the software he created was actually his by bookmarking his code data with important dates, like when he first met Walter. Toby suspects Linda is less attracted to Walter than suffering from damsel syndrome, having experiencing the same endorphin/dopamine rush from when he saved her. Walter breaks up, pledging to remain friends, while Paige dates Tim.
—KGF Vissers