Lockdown

S1, E4: When a dangerous Evo escapes from its containment unit in the Petting Zoo, all of Providence goes on lockdown, and Rex and Noah are trapped inside with it! During the stress of the moment, Noah admits to Rex that he works for White Knight, hired to keep an eye on him. Rex looses his cool, and for a time, his powers. Now the two must find a way to survive until help arrives - without killing each other first.