In the next "Bones", a severe blizzard causes a city-wide blackout, adding to the obstacles the team must overcome in order to solve a murder case that could be linked to a potential viral outbreak. But when Booth and Brennan find themselves trapped in an elevator during the power outage, Sweets is on hand for outside assistance, but does more than what's asked of him when he initiates a touchy conversation about Booth and Brennan's relationship.
Meanwhile, Angela and Hodgins get worrisome news about the health of their unborn baby, and Hodgins and "squint" Wendell Bray (guest star Michael Grant Terry) get creative in the lab and put their scientific skills to use to identify the victim and the rare disease.
Regarding the extent of bad news that Hodgela would receive, EW had this to say, "As for the baby, I know it will be a blow to the couple. My gut tells me, however, that it will ultimately bring them closer together and make for some truly unforgettable Hodgela moments."
"The Blackout in the Blizzard" airs March 17 on FOX.