The teen pen pals live in their version of “Sleepless in Seattle” nearly missing each other in landmarks across the city.

In a preprint posted recently to bioRxiv, Li and his team identify three of the brain’s pen pals in the insects.

Sullivan said Peck showed him letters and photos that he exchanged with pen pal Gacy.

Because of this, people appeared to overlook some glaring red flags, like how Peck boasted about having been pen pals with convicted serial killer and sex offender John Wayne Gacy.

The two had only met once before the pandemic, but became literary pen pals and cheerleaders for one another.