The ex-EastEnders actress stars alongside Hannah Tointon of The Inbetweeners, Nina Toussaint-White and Phoebe Fox in the ITV2 show, which focuses on a group of modern-day witches in Camden.
Clips contain explicit language
In the first teaser, Turner's character Stella gets fired after being pushed to breaking point by her nightmarish boss, forcing her to cast a memory spell to undo the damage.
However, the sorcery backfires and in clip two she appeals for help from the rest of the girls - just as they're getting a visit from earthly mother witch Caroline Quentin.
Switch begins Monday, October 15 at 10pm on ITV2.
The show will air immediately after the season four premiere of US supernatural drama The Vampire Diaries.