NCIS “Toxic” Season 6 Episode 21

Watch a sneak peek of NCIS Season 6 Episode 21 “Toxic” airing this Tuesday April 7 at 9 pm on CBS.

Also watch any NCIS Episodes you may have missed here.

You can also watch a preview from NCIS “Toxic” below and read all our NCIS coverage.

Episode Synopsis: NCIS “Toxic” Season 6 Episode 21 – When a government scientist goes missing, Abby is recruited to carry on his work, but the team worries that she may meet the same fate as her predecessor, on NCIS, Tuesday, April 7 (8:00-9:00 PM, ET/PT) on the CBS Television Network