AO3 is an excellent place. It has a large collection of fanfiction from various fandoms, including the Finder series. The tagging system there makes it easy to find exactly what you're looking for.
Some e - book platforms may also host fanfiction, although this is less common. You could search for 'Finder series fanfiction' on these platforms as well. However, be aware that the availability might be limited compared to the specialized fanfiction websites. Additionally, make sure you follow any rules or regulations of the platform while accessing and reading the fanfiction.
I'm not sure specifically as it could be a very unique fanfic. It might be about a group of characters who are on a journey to find 'thieving time', perhaps in a fantasy or science - fiction setting where time has some special properties and there are thieves involved with it.
In this type of fanfiction, one characteristic could be the exploration of different scenarios for the female characters. It might give them more agency and power compared to their roles in the original series. For example, they could be the ones leading the investigations or making crucial decisions. Also, the emotional aspects of the female characters, such as their love, friendship, or rivalry, might be delved into more deeply.
One interesting Finder series fanfiction could be those that explore the backstories of the main characters in more depth. For example, stories might focus on how a character developed their unique skills or what events in their past shaped their personalities.
One common theme could be adventure. Since it's related to 'the finder', the characters of Willa and Timo might go on exciting adventures together. Another could be friendship as they navigate through different situations.
A'series finder novel' could be a novel that helps readers find other novels within a series. For example, it might have a plot that involves a character searching for the next book in a series or uncovering hidden books in a series. It could also be a novel that is part of a series - finder series, perhaps with a theme of discovery related to the series it belongs to.
One way is to create a detailed and engaging profile on beta reader finder fanfiction. Include what kind of fanfiction you write, your writing goals, and what you expect from a beta reader. For example, if you write science - fiction fanfiction, mention the specific sub - genres like space opera or cyberpunk. This will attract beta readers who are interested in that type of work.
Since I haven't read it, I can't say for sure. But it could be a young adventurer with a special ability to sense the 'thieving time', or a group of time - keepers who are trying to stop the thievery.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfictions from various fandoms, including the Finder series. The tagging system on AO3 makes it easy to filter and find exactly what you're looking for.