SOLVED. YA Science Fiction series. Three or four teens find alien technology in a cave and evolve (better reflexes, improved memory). [s]

[Lena]

The four teenagers find some alien technology in a cave and develop extreme, if still mostly human, abilities (better reflexes, improved memory). There are also two secret agent types: a man with a scarred chest and his girlfriend, a dangerous fighter. It can’t be more than ten years old, I just can’t find it!

Thank you for helping.

Or was it three teenagers... darn

[Lena]

Bump

[Kris]

Please note you can bump your request (post a comment) every 30+ days, not more often – unless you have new information to share.

[Lena]

Bump

[Rainbowheart]

What do you mean by "starter?"

Was it the first book in a series?

Did you read it as a physical book or an e-book?

[Lena]

Yes it was the first book in a series. I read the ebook.

[Bryan457]

Maybe The Second Ship?

[Lena]

Yes!!! Thank you Bryan!