Books like The Hampton summit by Mike Dunbar

Since learning she is the Ruby, the final member of the time-traveling Circle of Twelve, nothing has gone right for Gwen and she holds suspicions about both Count Saint-German and Gideon, but as she uncovers the Circle's secrets she finally learns her own destiny. Since learning she is the final member of the time-traveling Circle of Twelve, Gwen has become suspicious of both Count Saint-Germain and Gideon. As she uncovers the Circle's secrets, she finally learns her destiny. The plot contains violence. Book #3

Polly's stay with her grandparents in Connecticut becomes an extraordinary experience as she encounters old friends and mysterious strangers and finds herself traveling back in time to play a crucial role in a prehistoric confrontation.

"Two worlds collide in this sweeping, romantic novel about a love that crosses centuries by bestselling author of the Darkest Minds series, Alexandra Bracken"-- "In one devastating night, violin prodigy Etta Spencer loses everything she knows and loves... Nicholas Carter is content with his life at sea, free from the Ironwoods-a powerful family in the Colonies-and the servitude he's known at their hands. But with the arrival of an unusual passenger on his ship comes the insistent pull of the past that he can't escape and the family that won't let him go so easily. Now the Ironwoods are searching for a stolen object of untold value, one they believe only Etta, his passenger, can find... Together, Etta and Nicholas embark on a perilous journey across centuries and continents, piecing together clues left behind by the traveler who will do anything to keep the object out of the Ironwoods' grasp."--Book jacket.

It's a year after 9/11. Sniper shootings throughout the D.C. area have everyone on edge and trying to make sense of these random acts of violence. Meanwhile, Craig and Lio are just trying to make sense of their lives. Craig’s crushing on quiet, distant Lio, and preoccupied with what it meant when Lio kissed him...and if he’ll do it again...and if kissing Lio will help him finally get over his ex-boyfriend, Cody. Lio feels most alive when he's with Craig. He forgets about his broken family, his dead brother, and the messed up world. But being with Craig means being vulnerable...and Lio will have to decide whether love is worth the risk. This intense, romantic novel from the author of Break and Invincible Summer is a poignant look at what it is to feel needed, connected, and alive.

"Jackson Meyer has thrown himself into his role as an agent for Tempest, the shadowy division of the CIA that handles all time-travel-related threats. Despite his heartbreak at losing the love of his life, Jackson has proved himself to be an excellent agent. However, after an accidental run in with Holly, the girl he altered history to save, Jackson is once again reminded of what he's lost. And when Eyewall, an opposing division of the CIA, emerges, Jackson and his fellow agents find themselves under attack"--Page 4 of cover.