PROVO, UT — A handwritten thank-you card mailed without provocation by Derek Holloway, 38, arrived Monday at the home of his college friend Marcus Webb, 39, prompting an immediate four-day audit of their friendship for signs of terminal illness, financial solicitation, or unresolved guilt.

The card, written on cream cardstock in blue ballpoint ink, thanked Webb for “being a good friend over the years” and included no further context. Webb described reading it twice before calling his wife into the room. “I read it again with her and we both agreed something was definitely wrong,” Webb said. “People don’t just write these. There has to be a reason.”

Webb subsequently reviewed his last twelve text exchanges with Holloway, cross-referenced a shared trip to Denver in February, and called Holloway’s sister to inquire whether anyone in the family was sick.

“I want to be grateful. I really do. But gratitude requires a category, and this card doesn’t have one.”

Holloway confirmed he is in good health, owes no money, and mailed the card on a Sunday afternoon after what he described as “just feeling like it.” Behavioral psychologist Dr. Renee Castillo, 51, of the University of Utah called the episode “a case study in how thoroughly we’ve lost the infrastructure for receiving kindness without suspicion.”

Holloway said he also sent three others. All four recipients have now formed a group chat.

At press time, Webb had drafted a response card, deleted it, and decided to wait another week to see what Holloway was “actually after.”