The Search for Fiona

The Covid-19 outbreak provides a new clue to a stone-cold kidnapping case. Decades ago, Fiona Franklin, a young virologist with a promising career in gene therapy, disappeared during an FBI sting operation. The international bioweapons spy ring murdered Benton Purdy's wife and Fiona went missing.
Forced into anonymity under the Witness Security Program, Beau Purdy still longs for Fiona, the love of his life. A trained microbiologist, he is able to follow up on the new clue. It leads to a Chinese laboratory, and then to a castle in Tibet. Before the Purdy family can react, the entire clan of detectives (now using the alias surname Anderson) is under siege in their Pacific Northwest bunker as the enemy closes in to destroy the Purdy family-
once and for all.
Of those who escape, who will find Fiona? Will it be Beau? Will it be his brother Hank, or one of his four Millennials trained in spy craft? Or will it be the espionage team of teenage novice-monks that infiltrate Potala Palace in search of Fiona? Will they accomplish their task before one of Bat Lady's viral variants sets off a new, global pandemic?