The basic story line of Kasie and Palmer being infected with a bio-toxin is sound but the execution in Kasies lab stretches credibility to limit with Palmers daughter being allowed to stay anywhere near a toxic zone never mind playing video games is sheer nonsense. Not to mention her seeing her Dad faint and being allowed to watch ! Also CDC involved but not a single member deployed into lab area in an form of protective wear. In fact the whole NCIS building remains in operation no evacuation at all. Decent acting totally undermined by a unbelievable contrived plot situation. Beginning to think all US shows are being written by 15 year olds, in fact that is probably an insult to such youths.