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Diana Cosby Books in Order

Explore Diana Cosby's books in order, including the MacGruders, Oath and Forbidden series, with summaries of her medieval Scottish romances and adventures.

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Diana Cosby books in publication order

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14 books

His Captive

by Diana Cosby

2007

Seeking revenge for his father's murder, Scottish knight Alexander MacGruder kidnaps English noblewoman Nichola Westcott for ransom. Their growing attraction challenges his mission and makes her vulnerable to enemies who regard her nationality as reason enough to kill.

His Woman

by Diana Cosby

2008

Duncan MacGruder reluctantly honors a dying man's request to rescue Isabel Adair, the woman who broke their engagement. Their dangerous journey through Scotland revives desire while concealed reasons for her apparent betrayal complicate his efforts to trust her again.

His Conquest

by Diana Cosby

2010

Linet Dancort frees condemned Scottish prisoner Seathan MacGruder in exchange for passage to the Highlands, escaping her brother's marriage plans. Traveling as fugitives through embattled Scotland, they face pursuit and an attraction that makes their bargain increasingly dangerous.

His Destiny

by Diana Cosby

2011

English mercenary Emma Astyn disguises herself as a vulnerable woman to intercept a document carried by Scottish rebel Patrik MacGruder. His rescue and unexpected compassion threaten her deception, leaving their perilous journey entangled with conflicting duties and growing desire.

His Enchantment

by Diana Cosby

2013

Fairy princess Catarine MacLaren is forbidden to enter the human world, yet Scotland's captured rulers need her help. Joining Lord Tralin MacGruder's rescue plans, she faces a romance whose survival may demand sacrifices to her obligations in the Otherworld.

His Seduction

by Diana Cosby

2013

Rois Drummond makes a false accusation to protect her father and finds herself married to Englishman Griffin Westcott. Unknown to her, Griffin spies for Scotland, and their unexpected marriage threatens both his secret mission and his resolve to remain detached.

An Oath Taken

by Diana Cosby

2014

Disguised as a boy to free her imprisoned brother, Elizabet Armstrong attempts to rob Ravenmoor's new castellan. Nicholas Beringar instead makes her his squire, placing her close to a man whose growing suspicions and kindness complicate her secret purpose.

An Oath Broken

by Diana Cosby

2015

Scottish earl Giric Armstrong accepts payment to escort English heiress Sarra Bellacote to an unwanted marriage. As threats against the bride turn the journey deadly, protecting her becomes inseparable from resisting feelings for a woman promised to someone else.

An Oath Sworn

by Diana Cosby

2015

Escaping a captor's plot against France and Scotland, Marie Alesia Serouge helps wounded Scottish warrior Colyne MacKerran. Both carry dangerous secrets and distrust each other's explanations, but their journey toward the coast brings mutual protection and unexpected attraction.

Forbidden Legacy

by Diana Cosby

2016

Katherine Calbraith agrees to marry knight Stephan MacQuistan to reclaim Avalon Castle after her family's murder. Stephan also claims the castle as his stolen birthright, making their political arrangement a collision of vengeance, concealed history and growing passion.

Forbidden Knight

by Diana Cosby

2017

Healer Alesone MacNiven approaches Robert Bruce's camp and is confronted by suspicious knight Thomas MacKelloch. When her father's planned marriage alliance threatens Scotland, Thomas must escort her to safety through the Highlands, where hostility gives way to attraction.

Forbidden Vow

by Diana Cosby

2018

Gwendolyn Murphy welcomes the man she believes is her intended husband to Latharn Castle. He is actually Templar knight Aiden MacConnell, gathering intelligence under a false identity, and his growing feelings threaten the deception required by his mission.

Forbidden Alliance

by Diana Cosby

2019

After her family's murder, Elspet McReynolds survives by stealing and protecting her remaining kin. She finds an ally in dispossessed Templar knight Cailin MacHugh, whose struggle to reclaim his title joins her own fight against treachery and loss.

Forbidden Realm

by Diana Cosby

2020

Templar knight Ronan O'Connor reluctantly returns toward Ireland on a mission for Robert Bruce, escorting noblewoman Lathir McConaghy. An attack leaves them adrift together, forging a bond that their guarded hearts, dangerous secrets and obligations may prevent them keeping.

Forbidden by Diana Cosby books in order

Explore this series
  1. Book cover for "Forbidden Legacy"

    Forbidden Legacy

    by Diana Cosby

    2016Forbidden by Diana Cosby, Book 1
  2. Book cover for "Forbidden Knight"

    Forbidden Knight

    by Diana Cosby

    2017Forbidden by Diana Cosby, Book 2
  3. Book cover for "Forbidden Vow"

    Forbidden Vow

    by Diana Cosby

    2018Forbidden by Diana Cosby, Book 3
  4. Book cover for "Forbidden Alliance"

    Forbidden Alliance

    by Diana Cosby

    2019Forbidden by Diana Cosby, Book 4
  5. Book cover for "Forbidden Realm"

    Forbidden Realm

    by Diana Cosby

    2020Forbidden by Diana Cosby, Book 5

MacGruder Brothers books in order

Explore this series
  1. Book cover for "His Captive"

    His Captive

    by Diana Cosby

    2007MacGruder Brothers, Book 1
  2. Book cover for "His Woman"

    His Woman

    by Diana Cosby

    2008MacGruder Brothers, Book 2
  3. Book cover for "His Conquest"

    His Conquest

    by Diana Cosby

    2010MacGruder Brothers, Book 3
  4. Book cover for "His Destiny"

    His Destiny

    by Diana Cosby

    2011MacGruder Brothers, Book 4
  5. Book cover for "His Enchantment"

    His Enchantment

    by Diana Cosby

    2013MacGruder Brothers, Book 6
  6. Book cover for "His Seduction"

    His Seduction

    by Diana Cosby

    2013MacGruder Brothers, Book 5

Oath Trilogy books in order

Explore this series
  1. Book cover for "An Oath Taken"

    An Oath Taken

    by Diana Cosby

    2014Oath Trilogy, Book 1
  2. Book cover for "An Oath Broken"

    An Oath Broken

    by Diana Cosby

    2015Oath Trilogy, Book 2
  3. Book cover for "An Oath Sworn"

    An Oath Sworn

    by Diana Cosby

    2015Oath Trilogy, Book 3

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