Vancouver Harbour Heliport as Waterfront Helipad
Savitar takes The Flash to the waterfront where Caitlin shows up with Cisco's help and uses her powers to save Barry.
“Killer Frost” Filming Locations
Caitlin’s worst fears come to past after she uses her powers to save Barry while Wally is stuck in a cocoon.
The Flash episode “Killer Frost” was filmed in Burnaby & Vancouver in Canada.
Swiss Water Decaffeinated Coffee as Ledded Goh Frozen Foods (exterior)
Caitlin kidnaps Julian and takes him to a food packaging facility.
Golden Boy Foods as Ledded Goh Frozen Foods (interior)
Caitlin takes Julian to a frozen foods warehouse so he can hunt down the acolytes for her.
Source: Brad Toth — Twitter
3825 Lozells Avenue as Second Acolyte's House
Caitlin interrogates one of the acolytes about Alchemy before being confronted by Cisco outside.
Source: Sean Koo — Twitter
Global BC as Central City Hospital (loading dock)
Julian stumbles out of the hospital where Savitar is waiting.