Rick Rowell/ABC
Natalie Abrams
August 28, 2014 AT 08:15 PM EDT

ABC unveiled a new Agents of S.H.I.E.L.D. billboard that may have motorists scratching their heads.

On Monday morning, a new ad for the show appeared on Barham and DeWitt—an intersection hard to miss when you’re coming into Hollywood—that features the mysterious alien equation that Coulson was carving into a wall in the final moments of the S.H.I.E.L.D. finale.

The billboard keeps with the minimalist tone the super series set going into its freshman run.

Can you decipher the alien equation? Tune in to Marvel’s Agents of S.H.I.E.L.D. on Sept. 23 at 9 p.m. on ABC.

UPDATE, Aug. 28, 2014: Less than two weeks after the first billboard popped up, a new one portraying Coulson falling further down the rabbit hole replaced it. Check it out:

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