The first episode of "Moon Knight" focuses on a man named Steven Grant, as he becomes the center of a series of increasingly bewildering mysteries. By the end of the episode, it's clear that Steven is also Marc Spector, who in turn can become the mysterious Moon Knight, but that's far from the only thing the final scenes reveal.
The cell phone with a missed call from “DuChamp” is a particularly important find. DuChamp is almost certainly "Frenchie" DuChamp, Marc's old mercenary friend and ally in the comics, implying that Marc and Frenchie's old mercenary boss — and Moon Knight's greatest enemy – Raoul Bushman is also lurking somewhere.
By the end of the episode, we see lines of communication open up between Grant and Spector, and discover that Arthur Harrow is far more powerful than he first seems. With wide-ranging influence, mind games, and control of supernatural beasts, Harrow is a formidable foe.
As Harrow's summoned jackal creature corners Steven in the museum bathroom, it's clear that its strength matches its supernatural creepiness. When Moon Knight completely and utterly manhandles the beast, it gives viewers the first good look at the awesome Moon Knight costume and the character's powers.