Lead somebody up/down the garden path
Definition 1 of 1
Pro Tip 1/3Cultural Context
This phrase is commonly used in British English and might be less familiar to speakers of other English varieties. 
When I studied in London, my British friends often said someone had been 'led up the garden path'.
Pro Tip 2/3Subtle Implication
Using this phrase implies that the deception was intentional and possibly elaborate or persuasive. 
The politician led the voters up the garden path with his eloquent promises.
Pro Tip 3/3Emotional Tone
The phrase often conveys a sense of betrayal or disappointment due to the deceit. 
She felt hurt, realizing she'd been led down the garden path about the job's true nature.