Mandi Bierly
November 06, 2014 AT 08:49 PM EST

Elementary is back, and with it, the recurring question from hopeful shippers: Will Sherlock and Joan ever hook up? It’s the worst question you could pose to stars Jonny Lee Miller and Lucy Liu. But ask them to describe the worst way it could happen, and that they can have fun with.

Watch them pitch the resulting spinoff—and reminisce about their first scene together and the moment producers knew the CBS drama would be a hit—in our Firsts & Worsts video below.

Elementary airs Thursdays at 10 p.m. ET on CBS.

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