London Daily

Focus on the big picture.
Friday, Apr 03, 2026

Husband who 'beat wife on cruise ship to death blames testosterone supplement'

Husband who 'beat wife on cruise ship to death blames testosterone supplement'

Kenneth Manzanares is seeking a more lenient sentence after pleading guilty to murdering his wife Kristy aboard the Emerald Princess
A man who admitted to beating his wife to death on a cruise ship is seeking a more lenient sentence and blaming a ‘history of testosterone supplementation’, among other impairments. Kenneth Manzanares, 43, pleaded guilty last year to murdering his wife Kristy Manzanares, but a new court filing states he underwent testing that revealed various disorders.

Kenneth had ‘neuropsychological testing and neuropsychiatric mental status examinations’ revealing neurocognitive and mood disorders and other functional impairments that contributed to him beating his wife in 2017, his lawyer Jamie McGrady wrote in the filing.

The sentencing memo filed on Thursday notes ‘functional impairments, due to a long history of testosterone use, including increased dosage, which triggered a “manic switch,” an irritable and elevated mood that directly impacted his mental cognitive functioning’.

‘What happened that night on the ship is what can only be described as a perfect storm,’ McGrady wrote. ‘Kenny’s brain injury, combined with his undiagnosed Bipolar Disorder and a problematic combination of prescribed medication and alcohol resulted in an aberrant episode of violence.’

Kenneth also played contact sports in college that caused him to suffer several concussions, the defense attorney said.

Kristy and Kenneth argued after she asked him for a divorce while the family was aboard the Emerald Princess cruise in Alaska in July 2017. The wife told her husband to leave the ship and go back to Utah, according to the US Attorney for the District of Alaska. Kenneth then told their children to leave the room and both went to a relative’s cabin. Kristy could be heard screaming as her husband straddled and punched her in the head.

Kristy’s father and brothers arrived to find Kenneth grabbing her body and dragging her towards the balcony. One of the men grabbed her ankles and brought her back into the cabin, but medical personnel were not able to revive her. Kenneth was arrested the next day.

Kenneth pleaded guilty to second-degree murder in February 2020. Prosecutors have argued that he admitted to ‘the most serious crime a person can commit against another’ and are seeking a life sentence.

McGrady said his client is willing and available to be tested by a government mental health expert and that prosecutors have not initiated the process.

Kenneth’s sentencing is scheduled for June.
Newsletter

Related Articles

0:00
0:00
Close
Trump’s Strategic Pressure on UK Seen as Push for Stronger Alignment and Fairer Terms
UK Focuses on Trade Finance to Secure Critical Materials for Defence and Energy Sectors
Majority of UK Businesses Hit by Middle East Conflict While Confidence Holds Firm
UK Royal Navy Faces Renewed Scrutiny as Debate Intensifies Over Capability and Readiness
Reform UK Faces Mounting Distractions as Policy Agenda Struggles to Gain Traction
Investigation Launched Into Northern Cyprus IVF Clinics After UK Families Receive Incorrect Sperm
International Meeting Issues Unified Call to Safeguard Navigation Through Strait of Hormuz
Potential Strait of Hormuz Closure Raises Concerns Over UK Food and Medicine Supply Chains
UK Leads Coalition of Over Forty Nations Urging Iran to Reopen Strait of Hormuz
UK Secures Tariff-Free Access for Medicines in Landmark US Pharma Trade Agreement
King Charles III Invited to Address Joint Session of U.S. Congress in Rare Diplomatic Honor
Debate Grows Over Whether Expanded North Sea Drilling Can Reduce UK Energy Bills
UK Faces Heightened Risk of Jet Fuel Shortages, Airline Chief Warns
UK Ends Police Investigations into Lawful Social Media Posts After Review Finds Overreach
Abramovich Moves to Establish Charity for Frozen Chelsea Sale Proceeds Amid UK Dispute
Starmer Reaffirms NATO Commitment While Responding to Trump’s Strategic Critique
UK Aid Reductions Raise Fears of Severe Human Impact Across Parts of Africa
UK Signals Renewed Push for EU Cooperation as Iran Conflict Reshapes Security Landscape
Bank of England Signals Caution as Bailey Advises Markets Against Expecting Rate Hikes
UK to Convene Global Coalition to Restore Shipping Through Strait of Hormuz
Trump Signals Possible NATO Reassessment, Emphasizes Stronger U.S. Strategic Autonomy
Australia Joins British-Led Efforts to Reopen Strait of Hormuz Amid Escalating Tensions
King Charles Plans US State Visit as UK Strengthens Ties with Trump Leadership
UK Regulator Launches Investigation Into Microsoft’s Business Software Practices
Kanye West Set for High-Profile Return to UK Stage at Wireless Festival
Trump Presses Europe to Strengthen Commitment as Iran Conflict Escalates
UK to Deploy Additional Troops to Middle East Amid Rising Regional Tensions
UK Authorities Face Claims of Heavy-Handed Measures in Monitoring Released Pro-Palestine Activists
Trump Calls on UK to Secure Its Own Energy as Iran Conflict Intensifies
Nigel Farage Declines Invitation to UK Conservative Conference Led by Liz Truss
Trump Warns Allies to Take Responsibility as Rift Deepens with UK and France Over Iran Conflict
How Britain’s Prime Minister Controls U.S. Bomber Access in Escalating Iran Conflict
Trump Urges Allies to Secure Their Own Oil Supplies as Hormuz Crisis Disrupts Global Energy
Russia Expels British Diplomat as UK Pushes Back Against Pressure
White House App Faces Scrutiny After Claims of Continuous User Location Tracking
BBC Faces Scrutiny Over Allegations of Paid Content Linked to Saudi Arabia
UK-France Coastal Patrol Agreement Nears Breakdown Amid Migration Pressures
UK Police Detain Pro-Palestine Activist Again Weeks After Bail Release
FTSE 100 Advances as Energy and Mining Shares Gain Amid Middle East Tensions
Eli Lilly Seeks UK Pricing Deal to Unlock Renewed Pharmaceutical Investment
Three Arrested in UK After Massive Cocaine Haul Discovered Hidden in Banana Shipment
UK Fuel Prices Poised for Further Surge Amid Global Energy Pressures
Apple Subsidiary Penalized by UK Authorities for Breach of Moscow Sanctions
Western Allies Intensify Coordinated Sanctions Strategy Against Russia
UK Lawmakers Face Criticism Over Renewed Push for Social Media Restrictions
Starmer Signals UK Crackdown on Addictive Social Media Features
Rising Costs Push One in Five UK Hospitality Businesses to the Brink of Closure
Man Arrested on Suspicion of Attempted Murder After Car Strikes Pedestrians in UK, Injuring Seven
Escalating Conflict Involving Iran Tightens Fiscal Pressures and Highlights UK Economic Vulnerabilities
UK Moves to Confront Russian ‘Shadow Fleet’ Operating in Its Waters
×