When Team Scorpion and Walter's parents visit Megan in the hospital as her health deteriorates, they are quarantined after a deadly fungus outbreak threatens to infect everyone.

Ayumi Hzuka, Camille Guaty, Carlos Sanchez, Charan Prabhakar, Glenn Keogh, Joe Pistone, Mary-Bonner Baker, Pamela Shafer, Ritu Lal, Sarah Himmelstein