Cathy Williams nació en 1953 en la Isla Trinidad en el Caribe. Vive en Chiswick Londres, Inglaterra con su esposo Richard y sus tres hijas; Charlotte, Olivia y Emma.

• A Powerful Attraction (1990)
• Caribbean Desire (1991)
• Shadow Heart (1991)
• Charade of the Heart (1992)
• A French Encounter (1992)
• Naive Awakening (1992)
• Too Scared to Love (1993)
• Bittersweet Love (1993)
• Shadows of Yesterday (1994)
• A Thorn in Paradise (1994)
• Unwilling Surrender (1994)
• A Burning Passion (1994)
• Beyond All Reason (1995)
• Vengeful Seduction (1995)
• The Price of Deceit (1995)
• To Tame a Proud Heart (1996)
• A Suitable Mistress (1996)
• A Natural Mother (1997)
• Accidental Mistress (1997)
• Willing to Wed (1997)
• The Unmarried Husband (1998)
• Sleeping with the Boss (1998)
• A Daughter for Christmas (1998)
• Wife for Hire (1999)
• The Baby Verdict (1999)
• A Scandalous Engagement (2000)
• The Baby Scandal (2000)
• The Boss's Proposal (2001)
• Merger by Matrimony (2001)
• Secretary on Demand (2001)
• The Rich Man's Mistress (2002)
• Riccardo's Secret Child (2002)
• The Millionaire's Revenge (2002)
• Constantinou's Mistress (2002)
• His Convenient Mistress (2003)
• The Greek Tycoon's Secret Child (2003)
• His Virgin Secretary (2004)
• The Italian Tycoon's Mistress (2004)
• The Billionaire Boss's Bride (2004)
• In the Banker's Bed (2005)
• The Greek's Forbidden Bride (2005)
• At the Italian's Command (2005)
• The Italian's Pregnant Mistress (2005)
• At the Greek Tycoon's Bidding (2006)
• At The Greek Tycoon's Pleasure (2006)
• The Italian Boss's Secretary Mistress (2006)
• Kept by the Spanish Billionaire (2007)
• The Italian Billionaire's Secret Love-Child (2007)
• Rafael's Suitable Bride (2008)
• Ruthless Tycoon, Inexperienced Mistress (2009)
• The Italian's One-Night Love-Child (2009)
• Powerful Boss, Prim Miss Jones (2010)
• The Secretary's Scandalous Secret (2010)
• Her Impossible Boss (2011)
• One Night in Rome (2011)
• The Truth Behind his Touch (2012)
• The Girl He'd Overlooked (2012)
• A Tempestuous Temptation (2012)
• The Secret Casella Baby (2013)
• A Deal with Di Capua (2013)
• His Temporary Mistress (2013)
• Secrets of a Ruthless Tycoon (2014)
• The Argentinian's Demand (2014)
• The Uncompromising Italian (2014)
• The Real Romero (2015)
• At Her Boss's Pleasure (2015)
• A Pawn in the Playboy's Game (2015)
• The Wedding Night Debt (2015)
• Seduced Into Her Boss's Service (2016)
• A Virgin For Vasquez (2016)
• Snowbound With His Innocent Temptation (2016)
• Bought to Wear the Billionaire's Ring (2017)
• The Secret Sanchez Heir (2017)
• Cipriani's Innocent Captive (2017)
• Legacy Of His Revenge (2017)
• A Deal For Her Innocence (2018)
• A Diamond Deal With Her Boss (2018)
• The Tycoon's Ultimate Conquest (2018)
• Contracted for the Spaniard's Heir (2019)
• Marriage Bargain With His Innocent (2019)
• The Italian's Christmas Proposition (2019)
• His Secretary's Nine-Month Notice (2020)
• The Forbidden Cabrera Brother (2020)

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1. Wearing The De Angelis Ring (2015)
2. The Surprise De Angelis Baby (2016)

• A Reluctant Wife (1998)

• His Secretary Bride (2000) (con Kim Lawrence)
• Marriages by Arrangement (2000) (con Diana Hamilton y Anne Weale)
• Nine to Five (2001) (con Kim Lawrence y Sandra Marton)
• Caribbean Caress (2002) (con Catherine Spencer)
• Passion in Paradise (2004) (con Jacqueline Baird y Sara Craven)
• Secrets and Sins... Revealed! / From Lust to Love (2005) (con Miranda Lee)
• Falling for the Boss (2005) (con Helen Brooks y Barbara McMahon)
• His Boardroom Mistress (2005) (con Helen Bianchin y Sandra Marton)
• Love in the City (2005) (con Miranda Lee y Anne McAllister)
• Her Nine Month Miracle (2005) (con Barbara Hannay y Marion Lennox)
• Their Secret Child (2006) (con Kim Lawrence y Jane Porter)
• Red-Hot Revenge (2006) (con Jacqueline Baird y Lee Wilkinson)
• Millionaire's Mistress (2006) (con Jacqueline Baird y Lynne Graham)
• The Tycoon's Virgin (2007) (con Daphne Clair y Sandra Field)
• His Convenient Woman (2007) (con Diana Hamilton y Barbara McMahon)
• Her Secret Child (2008) (con Sharon Kendrick y Miranda Lee)
• Taken by the Boss (2009) (con Leigh Michaels y Carole Mortimer)

• Sitio web de Cathy Williams en Harlequin Enterprises Ltd.
• Sitio web de Cathy Williams en Fantastic Fiction.