He attempts to retrieve Rupert by tracking DNA samples against the federal database from the money Brian was paid for Rupert. They discover the man who bought Rupert lives in Quahog, but upon arrival, they discover the house is deserted. They then see a moving truck leaving the house and follow it, with Mayor West driving.
He attempts to recover Rupert by comparing DNA samples against a federal database using the money Brian received for Rupert. They discover the man who purchased Rupert resides in Quahog but upon arrival find an empty house.  They then observe a moving truck departing and follow it, with Mayor West driving.