Yes, your story concept has elements that are reminiscent of various themes commonly found in gothic and supernatural fiction, as well as mystery thrillers. The premise of a mysterious clock that tolls at unusual times is evocative of classic tropes involving time, fate, and ominous events. The setting of a small town with a dark history populated by secrets, rituals, and possibly a hidden treasure adds layers of intrigue and suspense.
There are several works in literature and film that explore similar motifs, such as curses tied to specific objects (like the clock), the psychological impact of legend and superstition on a community, and the pursuit of truth leading to unexpected revelations. However, the specifics of your narrative—particularly the investigation by a local journalist and the intertwining of the town's founders and cult-like practices—suggest an original twist on these familiar elements.
If you're looking to differentiate your story further, you could consider emphasizing unique aspects of the town's history, the nature of the hidden treasure, or character backstories that tie into the clock's powers.