2 Book compilation:

Twin of Ice:
Happily betrothed to Dr. Lee Westfield, Houston is every bit the good girl she was raised to be. So when faced with Kane Taggert's brash marriage proposal, Houston is outwardly shocked. But beneath her gracious demeanor lies a woman of hidden longings -- and her defenses begin to melt the second this rugged stranger touches his hungry lips to hers.

Meet Houston's impetuous identical twin sister, Blair Chandler, in Jude Deveraux's Twin of Fire.

JUDE DEVERAUX entwines the fronteir adventures of two unforgettable sisters -- demure beauty Houston Chandler and her independent, hot-tempered twin Blair -- discover heartfelt passions as powerfully as compelling as ice and fire....

Twin of Fire
While dreaming of practicing medicine, Blair falls in love with her placid sister's fianceé, himself a doctor. Blair's impetuous spirit has won her a medical degree in a man's world -- and captured Lee Westfield's heart. But even as the couple's ardor grows, there are nights when Lee disappears only to return exhausted, haunted. His silence imperils their love, but the truth would imperil her life.

Montgomery/Taggert (in publication order):
The Black Lyon (Montgomery/Taggert, #1)
The Velvet Promise (Velvet Montgomery Annuals Tetralogy #1) (Montgomery/Taggert, #2)
Highland Velvet (Velvet Montgomery Annuals Tetralogy #2) (Montgomery/Taggert, #3)
Velvet Angel (Velvet Montgomery Annuals Tetralogy #4) (Montgomery/Taggert, #4)
Twin of Ice (Chandler Twins, #1) (Montgomery/Taggert, #5)
Twin of Fire (Chandler Twins, #2) (Montgomery/Taggert, #6)
The Temptress (Montgomery/Taggert, #7)
The Raider (Montgomery/Taggert, #8)
The Princess (Montgomery/Taggert, #9)
The Awakening (Montgomery/Taggert, #10)
The Maiden (Montgomery/Taggert, #11)
A Knight in Shining Armor (Montgomery/Taggert Family, #12)
Wishes (Montgomery/Taggert, #13)
Mountain Laurel (Montgomery/Taggert, #14)
The Duchess (Montgomery/Taggert, #15)
Eternity (Montgomery/Taggert, #16)
Sweet Liar (Montgomery/Taggert, #17)
The Invitation (includes Montgomery/Taggert, #18)
A Holiday of Love (includes Montgomery/Taggert, #19)
Just Curious (Montgomery/Taggert, #20)
The Heiress (Montgomery/Taggert, #21)
High Tide (Montgomery/Taggert, #22)
Forever... (Forever, #1) (Montgomery/Taggert, #23)
Forever and Always (Forever, #2) (Montgomery/Taggert, #24)
Holly (Montgomery/Taggert, #25)
Always (Montgomery/Taggert, #26)
Someone to Love (Montgomery/Taggert, #27)
True Love (Nantucket Brides, #1)(Montgomery/Taggert, #28)
For All Time (Nantucket Brides, #2)(Montgomery/Taggert, #29)
Ever After (Nantucket Brides, #3)(Montgomery/Taggert, #30)
Met Her Match(Montgomery/Taggert, #31)
Simple Gifts: Just Curious / Miracles / Change of Heart / Double Exposure(Montgomery/Taggert, #32)