Erica works with new allies to uncover a biological threat they suspect the Visitors have been plotting. Aboard the mothership, Anna meets with a special guest, while managing the investigation into the murder of a V. Chad does a segment on the V Hea... (more)ling Centers demonstrating their amazing medical abilities, but finds himself conflicted by some of his findings.

Christopher Shyer, David Richmond-Peck, Mark Hildreth, Ryan Kennedy, Scott Hylands