Coffeehouse Angel is a novel by writer Suzanne Selfors. This novel follows Katrina Svenson, a sixteen year old girl living in the small community of Nordby, Washington, as she struggles to help her grandmother save the family coffeehouse. The Scandinavian coffeehouse has served in the same location for more than twenty years, but recently a more modern coffeehouse has moved in right next door and is running them out of business. When the owner of the other coffeehouse offers to buy them out, Katrina's grandmother becomes determined to fight him, but the fight becomes impossible when the health department shuts them down. Coffeehouse Angel is a story of strength in the face of adversity that will inspire readers to cheer for Katrina as she finds a way to overcome overwhelming obstacles and succeed where she never thought it possible.

Katrina Svenson is taking out the garbage one morning when she sees a homeless man lying in the alley between her grandmother's coffeehouse, Anna's Old World Scandinavian Coffeehouse, and the coffee bar next door, Java Heaven. At first Katrina is frightened, but then realizes the guy must need some help. Katrina takes a bag filled with day old pastries, a cup of coffee, and a sample bag of chocolate covered coffee beans outside for the man.

At school, Katrina is horrified when the homeless man, wearing a kilt, comes into the school and asks to see her. The man insists that he needs to repay her kindness, but is sent away by school officials. Katrina tries to avoid the man after school, but he finds her anyway. The man tells Katrina that he is a messenger just returned from Ireland and that he must repay her kindness by giving her the one thing she truly desires. Katrina tries to blow him off, but he refuses to be ignored. Therefore Katrina agrees to accept a desire for fortune. The man gives her a chocolate covered bean that he says will give her fortune.

Katrina tells her friend about the bean and they decide to ground it up and drink it together. Instead, Katrina's other friend, Vincent, drinks it. Less than an hour later, Vincent saves a man from dying during a heart attack. The man turns out to be wealthy and he gives Vincent a full scholarship to college. Vincent becomes a media sensation. Even Java Heaven gets in on the frenzy by creating a drink called the Vincent Mocha. This upsets Katrina, especially since the owner of Java Heaven just recently tried to buy her grandmother out so he can expand his business.

Katrina becomes even more annoyed with Vincent when she realizes that he is beginning a new romantic relationship with the daughter of Java Heaven's owner, Heidi Darling. To top it off, the stranger comes back to Katrina and insists again on giving her her heart's desire. This time he offers fame. However, Katrina accidentally feeds the bean to her cat, Ratcatcher. When Katrina returns from school that day, she discovers that Ratcatcher is the talk of the town because he killed a massive rat inside the coffeehouse. However, the rat leads to the health department closing them down. Then Katrina's grandmother has a heart attack.

Katrina is desperate to save her family business from Java Heaven. Then it occurs to her that she could use Ratcatcher's fame to help out her grandmother's coffeehouse. Katrina opens a Ratcatcher souvenir shop that does amazing business, making enough to pay what her grandmother owes and save the business. Not only this, but Java Heaven is run out of business when it turns out that the owner has lied about serving organic coffee.