I understand this is the first appearances made by the spies' moms. I saw the Totally Busted episodes first though, as the episodes are aired in random order here in my country (through Disney Channel Asia). In those episodes, the moms look exactly like their daughters, only older. Here in Mommie Dearest, Alex and Sam's moms sport hair colors that are different from their respective daughters. Though of course, the color change could be explained by a hair dye job.
Our beloved spies celebrate Mothers' Day with their moms. Clover gets a mud bath with her mom Stella; Alex and Carmen get a massage; while Sam and Gaby go biking. The girls soon notice their moms acting strangely and dangerously.