With S.H.I.E.L.D. reeling from Daisy's violent defection, the team start looking for ways to defeat Hive's mind-controlling ability.
While Hive travels America 'recruiting' new Inhumans to his cause, Fitz, Simmons, and Mac head to Romania to track down an elusive transhumanist scientist, Holden Radcliffe (the ever-excellent John Hannah), whose research might help them with their problem.
Unfortunately, soon after they arrive, so do Hive and Daisy.
The spine of The Singularity was the beautifully awkward sexual tension between Fitz and Simmons, but around this the episode offered us the requisite fantastic superpowered fisticuffs, character development, and a fascinating glimpse into the breadth of enhanced humanity in the Marvel Cinematic Universe.
One of the very, very slight quibbles I've always felt about comparing Marvel comics to their Cinematic Universe was the paucity of actual powered-people in the live-action outings, but suddenly Fitz and Simmons find themselves in a club where the majority of guests are enhanced to some degree or another.
Throw in the increasing number of Inhumans and the worlds of the comics and live-action are drawing ever closer.
Not only did we find out in The Singularity - at the end of the episode - what Hive has been spending Malick's money on, but we also see the final defeat of Hydra.
There was a feeling of verisimilitude in the way this was dealt with almost as a side issue to the show's main arc, with Coulson and May simply watching Talbot's strike teams via video link.
And just because S.H.I.E.L.D. believes it's cut off the final head of Hydra, doesn't mean to say that two more heads can't spring up at some stage in the future.