It took some digging, but eventually Shodan unearthed Abacus' phone number. Sometime after the Occult Club meeting, a cellphone in Sacramento will start buzzing. Hopefully, the number is still good.
The sound of dialing numbers (phone, keypad, rotaries, calculators) echo in the ears of those in close proximity. Shimmering gold lettering take the form of flickering mathematical symbols that form complex equations in the air.