PORTLAND — A 29-year-old fitness instructor has pleaded not guilty on charges she ran a prostitution business out of her Kennebunk Zumba studio and secretly filmed her encounters.

Alexis Wright of Wells entered her plea in a Portland courtroom Tuesday to 109 counts including prostitution and tax evasion charges. Mark Strong Sr., a 57-year-old insurance agent and Wright’s alleged business partner, pleaded not guilty to 59 counts of promoting prostitution, invasion of privacy and conspiracy.

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Police say they found video footage of Wright having sex with men who were unaware they were being filmed, and meticulous records suggesting the sex acts could have generated $150,000.

Police say they’ve begun issuing summonses to Wright’s alleged customers. Strong’s attorney says he’s seen a list of about 150 customers, some of whom are well-known.