The Sierra Files Books in Order

Animal activist Sierra Nakamura finds a coworker dead while filming and receives threats against her cats unless she surrenders information. Searching for answers tests her relationship with Chad and turns her commitment to protecting animals into a personal fight.

Newlywed Sierra returns to her parents' home for a vow-renewal celebration, only for a stray dog to arrive carrying a possible human bone. Family expectations, a nosy neighbor and an old flame complicate her investigation.

Sierra spends Christmas with her husband's family and discovers their reindeer have vanished before a community light show. Concern for the animals pushes her past objections to the farm, while hidden family tensions threaten the holiday.

New mother Sierra Nakamura Davis struggles to balance family life with her animal work when a thirteen-foot python disappears. The discovery of an intern's body turns the search into a murder investigation that threatens her already complicated life.