A Purple Place for Dying by John D Macdonald

A Travis McGee story about finding a missing person who was committed to a hospital for the mentally ill, then disappeared.  The hospital is experimenting on its ‘patients’ all with their consent, even though they do not have the mental capacity to give the consent.  McGee ends-up as an unwilling patient himself and has to cause all kinds of problems to get free.

Interworld by Neil Gaiman

An average high-school student, Joey,  who is shunned by his school mates finds himself at the center of an inter-dimensional attempt to take over every instance of Earth.  Turns out that he has some talent for foiling these beings using a simple formula of omega over infinity.  With his capabilities he does more than just stop the beings and rescues not only the Earth, but the people trying to save all the Earths.

The Rose Code by Kate Quinn

The third book by Ms. Quinn set in or around World War II.  This one involves three heroines from different backgrounds working at Bletchley Park, the famous location of codebreaking in England during the war.  Mab is a girl from Southwitch who lives with her mother and sister (actually her daughter).  Osla is a welathy debutante who falls in love with Prince Phillip (before Elizabeth).  Beth is a shy, downtrodden, genius with math.  The three of them end-up in the same home while working at Bletchly park as code breakers. 

The Stone Sky by N.K. Jemisin

The third and final volume of the Broken Earth.   Essun awakes from a coma caused by her use of the obelisk to discover that the comm is on the road to where the attackers came from.  Her arm is partially stone.  The real problem is that the moon, which had been pushed out of it's orbit much farther away from Earth ages ago, is now on a collision course back to the planet it once circled.  Nassun is seeking a way to get to an island on the other side of the planet where she hopes to convert everyone left on Earth into stone people so they can survive the collision.  Essun eventually also realizes she must go to that same island to try to divert the course of the moon.

The Obelisk Gate by N.K. Jemisin

The second volume of the Broken Earth.  Nassun finds her father standing over her dead brother.  He killed his son because he discovered the boy was an orogene - someone who can control the power of the earth to make changes around themselves to defend or to kill.  But Nassun's talents allow her to calm her father and they set out to find a safe place.  Essun, the mother, finds herself outed as an orogene in their village just after a massive earthquake.  The villagers agree to let her go, but at the gate, the village men try to kill her, unsuccessfully - she kills the entire village instead.  She sets out to find her daughter and husband.  On the way she acquires a couple of followers, one who turns out to be a girl Essun knew and went with to discover a secret.  The other turns out to be a being of stone who can travel through the earth.  They end-up in an underground comm.  The comm is attacked, and Essun uses an obelisk to kill almost all of the attackers.  Even though they survive and eliminate the attackers, the comm is so damaged that the survivors must set out for another place.  Meanwhile, Nassun, who has been learning about how to control her powers at a camp, eventually is forced to kill her father in self-defence using an obelisk.

Tears of Amber by Sofia Segovia        

About a group of people thrown together during World War II in East Prussia, what is now the far-western Russian oblast of Kalingrad.  A Polish man and a Polish woman are sent as slaves to help on a German farm.  A second German family is torn apart by the enforced enlistment of the father.  The history of the war works out its tragedy amongst these innocent bystanders just trying to survive a terrible time in history.