In a recent interview Arrow showrunner, Marc Guggenheim, dished about the identity of Sara's (Caity Loitz) killer, alluding to the fact he might have already been revealed for the observant viewer.

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Speaking to TVLine, Guggenheim dished about a lot of interesting plot points in the season, which are yet to be resolved. He also addressed the looming question about Sara's murderer. The showrunner teased audiences by stating that maybe the killer was already known, and fans hadn't quite picked up on the hints.

"Look, certainly the mystery of "Who killed Sara?" is a mystery where there's only so many suspects, mainly because were not going to be jerks and introduce some day player character at the last moment," Guggenheim said. "When the ultimate reveal happens, it will be someone who you know. Or maybe the reveal has already happened? Hopefully we've opened up a world where anything is possible, and to me that's the most fun part of working on the show."

Here's the official synopsis for the latest episode of the season:

"TED GRANT IS ACCUSED OF MURDER - After a body is found strung up in the Wildcat gym, Ted Grant (J.R. Ramirez) becomes the main suspect. Oliver (Stephen Amell) and Laurel (Katie Cassidy) argue over Ted's innocence. Meanwhile, in flashbacks, when Maseo (Karl Yune) needs Oliver to remember where an informant for China White stashed key information, he asks Tatsu (guest star Rila Fukushima) to help jog Oliver's memory. Roy (Colton Haynes) shares a secret with Felicity (Emily Bett Rickards). Peter Leto directed the episode written by Erik Oleson (#306)."

Arrow's next episode, titled Guilty, aired on November 12 at 8 pm EST.

Watch the preview for the episode here:

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Arrow, The cw, Television