There are series that succeed because they deliver exactly what they promise. And then there are series like Sugar, which seem to thrive precisely because nobody can quite explain what they are.

When it premiered in 2024, the Apple TV drama was marketed as an elegant contemporary noir about a private investigator specializing in missing persons cases. And for much of its first season, that’s exactly what it was: a love letter to classic cinema, filled with references to 1940s Hollywood, melancholic music, vintage cars, impeccable suits, and an extraordinarily restrained performance by Colin Farrell as John Sugar. The problem — or the genius, depending on your perspective — is that Sugar was hiding an entirely different genre within itself.

While investigating the disappearance of Olivia Siegel, the granddaughter of a legendary Hollywood producer, John Sugar is revealed to be much more than a melancholy detective with a passion for old movies. He is, quite literally, an extraterrestrial living secretly among humans, a member of a society of observers sent to Earth to study humanity.

The revelation was so unexpected that it completely divided audiences. Some viewers abandoned the series immediately. Others, fascinated by its audacity, decided to embrace the premise. What’s remarkable is that even after the reveal, Sugar never really became a science-fiction series. At its core, it remained a loss story.

Throughout the first season, we learn that John became a specialist in missing persons because he himself never recovered from the disappearance of his sister, Djen. And the season finale turns that grief into something even more unsettling: a clue left behind by Henry, his friend and mentor, suggests that he may have been involved in her disappearance. John chooses to remain on Earth to uncover the truth, while many of his fellow observers begin to leave.

That unresolved mystery becomes the starting point for the second season, which has premiered to stronger reviews than the first. Rather than attempting to recreate the shock of its extraterrestrial reveal, the new season appears more comfortable with its own identity. John is now largely alone on Earth, still obsessed with finding his sister, while taking on a new case involving the disappearance of the brother of a young boxer in Los Angeles, an investigation that quickly expands into police corruption, organized crime, and a conspiracy far larger than it initially appeared.

Critics have praised precisely this shift in focus. Instead of rushing to explain its alien mythology, the series doubles down on its strongest elements: the noir atmosphere, the existential melancholy, the stunning portrait of Los Angeles, and Farrell’s understated performance, which continues to portray John Sugar less as an alien and more as someone profoundly in love with humanity. And perhaps that is exactly what makes Sugar such a singular — and frustrating — experience.

Because, in truth, we were never watching the series to understand how its alien civilization works. We kept watching because we enjoy spending time with John Sugar. We enjoy watching him drive through Los Angeles while listening to jazz, quoting classic films, wearing impeccable suits, and trying to understand people who, paradoxically, often seem far stranger than he is.

Even so, after two seasons, the feeling remains that Sugar continues to avoid answering the one question that really matters: where exactly did John Sugar’s story begin, and, more importantly, where does it intend to go?