What episode does claudia from warehouse 13 go to eureka?

Claudia Donovan from "Warehouse 13" makes a crossover appearance in the "Eureka" episode titled "Crossing Over," which is the 5th episode of Season 4. In this episode, she teams up with the characters from Eureka to solve a crisis involving a malfunctioning artifact. The crossover highlights the shared universe between the two shows, showcasing their unique blend of Science Fiction and adventure.