Clueless at the Coffee Station - A Betti Bryant Mystery, #1

Betti Bryant knows she's not supposed to be a barista five years after graduating from college, but her life is actually super adorable-except for the part where she has to endure her ex-boyfriend's musical rendition of their breakup at the coffee shop's Open Mic Night every Friday. When an entire local art collection is stolen from the cafe during his performance, Betti sees her chance to persuade her panicked boss to cancel Open Mic Night, at least until the crime is solved.
Instead, he announces plans to sell the beloved cafe to a real estate developer, who will demolish it. Betti believes her boss will change his mind once justice is served. So, armed with a list of drink orders from the night of the crime and the sleuthiest outfit she can find at the thrift store, she sets out to investigate the theft herself. If she fails, she's promised her sister she'll accept whatever non-adorable entry-level corporate job she can get, abandoning her ideals about finding her own path in life.
The iconic cafe will close forever.