The Hills of Singapore: A landscape of loss, longing and love by Dawn Farnham

In Vol. 3 of "The Straits Quartet", the sexy Regency-style romance series set in the exotic East, young, beautiful and wealthy widow Charlotte Macleod leaves Batavia in the 1850s and returns to Singapore for the English education of her two young sons. She is determined not to be drawn back into a secret affair with Zhen, the married Chinese merchant, triad-member and man she loves who is, unbeknownst to him, the father of her eldest son, Alex. Charlotte is convinced she can find happiness in a respectable marriage with the attractive but reticent Captain Maitland. But when murder and death strike, Singapore erupts in the violence of triad wars and Zhen’s growing affection for Alex gives cause for alarm, she must make some hard decisions, for her children and herself.