free admittance

but li’l did agatha jamison know that as she was cooking up her truth serum, her mortal enemy contrived to sabotage it: while she was waiting for the vial to boil, sitting in her living room watching a speedrun o’ tennis, her mortal enemy snuck into the kitchen from the back door & replaced her serum with a serum that would possess its consumer into admitting to any crime incited by it. then her mortal enemy snuck out & peered in thru the window & watched as agatha entered to check on the serum. the blank smile on her face as she stared @ its bubbling bright liquid proved that she didn’t suspect a thing.

Prompt:

entertainment, mixture, assignment