After being fired for damaging the bathroom of the National Art Gallery, Steven Grant uses the keycard he found in his apartment to access his storage locker containing the scarab.

Harrow reveals that he was Khonshu's previous avatar until he chose to follow Ammit instead, and that he seeks the scarab to find her tomb and resurrect her so that she can purge humanity of evil.

[5] Executive producers include Marvel Studios' Kevin Feige, Louis D'Esposito, Victoria Alonso, Brad Winderbaum, and Grant Curtis, star Oscar Isaac, Diab, and head writer Jeremy Slater.

[9] The episode stars Oscar Isaac as Marc Spector / Moon Knight and Steven Grant / Mr. Knight, May Calamawy as Layla El-Faouly,[7] Karim El-Hakim and F. Murray Abraham as the on-set performer and voice of Khonshu, respectively,[7][10]: 47:31–47:50  Ann Akinjirin as Bobbi Kennedy, David Ganly as Billy Fitzgerald,[11] and Ethan Hawke as Arthur Harrow.

[15] Filming took place at Origo Studios in Budapest,[6]: 8  with Benson and Moorehead directing,[4] and Andrew Droz Palermo serving as cinematographer.

[20] A QR code was included in the episode that allowed viewers to access a free digital copy of the comic Werewolf by Night #33 in which Moon Knight appears.

[28][29] JustWatch, a guide to streaming content with access to data from more than 20 million users around the world, estimated that Moon Knight was the second most-streamed series in the U.S. from April 4–10.

[30] Whip Media, which tracks viewership data for the more than 21 million worldwide users of its TV Time app, revealed that it was the most-streamed original series for the week ending April 10.

The site's critical consensus reads, "Steven gets to know his alter ego Marc—or is it the other way around?—in 'Summon the Suit,' an expository installment that packs in plenty of fun to make the info dump go down smooth.

[33] Kirsten Howard writing for Den of Geek gave the episode 4 out of 5 stars, saying that it was heartbreaking how it appeared that many of Grant's interests were unwittingly Layla's passions, maybe in an effort to stay close to her.

Betancourt compared Harrow believing that people could be judged and punished even for things that they have not done to the plot of Minority Report (2002) mixed with Egyptian mythology.

He complimented Abraham's vocal performance as Khonshu, saying "only he could make this skeletal moon god feel imperious yet not without an unintentionally dry sense of humor".

She felt that the depiction of Mr. Knight may be a disappointment to some fans after the show's marketing material advertised him as a "capable, sinister alter in Marc's system, not Steven's bumbling idea of a supersuit".

Boccella felt that it was a good thing that it appeared that most of the trailer footage has now been featured, allowing the audience to move forward with no idea of what would come next.