A Boston-based law firm serving clients across New England, nationwide, and internationally.
If you are facing arrest, custodial interrogation, a search warrant, or an imminent court proceeding, call the office directly rather than relying on electronic intake.
The problem
Waiting rarely helps. Evidence disappears. Narratives harden. Deadlines pass.
Serious problems require serious lawyers. That’s what we do.
The problems we handle
We represent clients when the ordinary approach isn’t enough.
01 / Serious criminal matters
White-collar and complex prosecutions, trial advocacy, and appellate continuity—often engaged early to stop exposure in its tracks across state and federal forums.
Criminal defense02 / Civil rights
Claims against municipalities, agencies, and officers—trial through appeal when constitutional injury, wrongful prosecution, or excessive force is at stake.
Civil rights03 / Civil litigation
Serious injury and fatality claims with verdict-ready expert integration—from investigation and liability theory through trial and settlement leverage.
Injury & wrongful death04 / Family matters
Dissolution, custody, DCF matters, and Massachusetts appellate family strategy with Probate & Family Court preparation that anticipates appeal.
Family law05 / Business disputes
Complex commercial fights in Superior Court, the Business Litigation Session, and federal court—from pleadings and discovery through trial and appeal.
Business litigation06 / Military exposure
Courts-martial, administrative separation, and discharge upgrade petitions—counsel who treat military exposure with the same strategic continuity as civilian trial work.
Military law07 / Appellate litigation
Massachusetts Appeals Court, Supreme Judicial Court, and First Circuit briefing and argument—the same strategic thread when the matter moves to a higher court.
Appellate litigationWhy Denner Lamanna
Early intervention. Trial-ready strategy. Appellate depth. Comfort with public scrutiny and high stakes.
How we approach serious problems
Every serious legal problem is different. Before we recommend a course of action, we identify the facts, the vulnerabilities, the leverage, and the risks.
Then we build the strategy.
Understand the problem. Find what matters.
Identify leverage. Build the strongest path forward.
Negotiate, litigate, try, or appeal—with purpose.
The lawyers
Founding partners lead the work. Around them is a tight team of trial and appellate counsel, investigators, and litigation support who move as one—from the first call through final appeal. No handoffs. No silos. One continuous fight.
Founding Partner
Criminal defense, civil rights, military justice, trial & appellate counsel
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Founding Partner
Appellate practice, family law, parentage & complex civil litigation
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Jeffrey A. Denner
Criminal defense, civil rights, military justice, trial & appellate counsel
Jennifer Lamanna
Appellate practice, family law, parentage & complex civil litigation
Edward Gainor
Mediation, business litigation, insurance & recovery
Israel M. Sanchez Jr.
General, banking & commercial litigation
Christina Delisio
Litigation, environmental & regulatory matters
Selected matters
Filter by category. High-stakes criminal, civil, appellate, and personal injury matters—where the outcome for the client is the point.
Showing all matters
$28.1 Million
Aggregate recovery reported in the high-profile catastrophic wrongful death matter (Estate of Del Valle).
All Charges Dismissed
Former Massachusetts State Treasurer; mistrial, then all charges dismissed.
National Defense
High-stakes defense through national media scrutiny (Commonwealth v. Gerhartsreiter).
License Ordered
Appeals Court reversed LTC denial based on a spouse’s conduct—clarifying the suitability standard.
Precedent
SJC clarified when a non-biological parent may establish presumptive parentage.
Prior Restraint Struck
SJC struck down sweeping divorce nondisparagement orders as unconstitutional.
$3.6 Million Affirmed
$3.6 million civil recovery connected to Boston’s most notorious criminal history—judgment upheld on appeal.
Treaty Precedent
Landmark U.S.–U.K. extradition ruling on appellate review and treaty-based appeal rights.
Trial & appellate counsel · Boston
Attorney advertising; past results do not guarantee future outcomes.
Client Testimonials
Here’s what they have to say about how we handled them.
Jeffrey Denner has taken on an impossible situation for me. Attorney Denner will be there for you 24/7, make certain all is in order, has a phenomenal staff and goes the distance...
I just concluded a two-day trial with attorney Lamanna... Attorney Lamanna is BRILLIANT, assertive, thorough, detailed oriented, honest with her clients, knows the law from A to Z...
Ed is a zealous and tireless litigator with great instincts for the law and human nature. At the same token, Ed provides sound practical legal advice, and quickly recognizes...
In the press
National coverage of the cases, trials, appeals, and constitutional fights we’ve handled. Browse the full archive.
Fox News / AP
“That’s the stuff that reasonable doubt is made of.”
“The first step to finding out what really happened.”
“For Massachusetts purposes, a landmark ruling.”
Fair trial rights in the most watched federal prosecution in modern Boston history.
Broadcast coverage when DCF removed children from their parents.
National reporting on multi-party wrongful death litigation after the I-90 collapse.
FAQ
Serious legal problems move fast. These are the questions we hear most from people facing investigation, trial, or appeal—and the answers that usually matter first.
Yes. We are a Boston litigation firm, handling high-stakes trial and appellate work in Massachusetts state court, the U.S. District Court for the District of Massachusetts, the First Circuit, and related forums nationwide and internationally where licensing permits.
Very soon. In many Massachusetts civil matters, a notice of appeal is due within 30 days after entry of the judgment or order being appealed. Criminal and administrative appeals have their own deadlines. Post-judgment motions can affect timing—discussions about settlement do not pause the clock. If a deadline is near, contact us immediately.
Submitting an inquiry or requesting a preliminary consultation is confidential. An attorney-client relationship begins only after a written engagement agreement. There is no charge to submit the form or speak with us about whether we can help.
There is no charge to submit an inquiry or request a confidential preliminary consultation. Representation begins only after a written engagement agreement.
Immediate counsel
Call now
617.886.5188If you are facing arrest, custodial interrogation, a search warrant, or an imminent court proceeding, call the office directly rather than relying on electronic intake.
Always-on intake
Urgent matters are handled around the clock. A phone call is always the best way to reach us.
(617) 886-5188Available for urgent matters 24/7
Confidential review
A phone call is always best. We may not see an online form submission right away. If your matter is urgent—arrest, subpoena, search warrant, hearing, or deadline—call (617) 886-5188 now.
Continue to confidential review Call (617) 886-5188The full intake form is on the next page. Representation begins only after a written engagement agreement.
