Market st security services & key is a treasure. I called him around 11 a.m. to ask if he could rekey my apartment locks after my roommate went psycho. He came over within two hours and rekeyed all three locks within 15 minutes. His rate was very reasonable considering the great service and he was extremely courteous and professional. Next time I have a psycho roommate (God, please, noooooo) I will definitely call Market st security services & key again..