[Your Name] [Your Address] [City, State, Zip] [Email Address] [Phone Number] [Date] [Expert Witness Name] [Expert Witness Address] [City, State, Zip] Subject: Retainer for Expert Witness Services Dear [Expert Witness Name], I hope this letter finds you well. I am writing to formally request your expert witness services for a pending legal matter in Philadelphia, Pennsylvania. We believe your extensive knowledge and experience in [relevant area of expertise] would greatly contribute to strengthening our case. Background Information: [Include a brief overview of the case, highlighting key points and relevant details.] Scope of Expert Witness Services: [Provide a detailed breakdown of the specific services you require from the expert witness. This may include but is not limited to: reviewing relevant documents, providing written reports, conducting analysis, participating in depositions, testifying in court, etc.] Fee Structure: [Clearly outline the retainer fee and payment terms, being mindful of local regulations and customary rates for expert witnesses in Philadelphia, Pennsylvania. Consider including information on any additional expenses, such as travel or research costs.] Availability and Timeline: [Specify the expected timeline for the case, including any deadlines for reports or court appearances. Request the expert witness's confirmation of availability during key stages of the litigation process.] Confidentiality: [Assure the expert witness of your commitment to maintaining the confidentiality of all case-related information.] Next Steps: [Provide instructions on how the expert witness can formally accept the engagement, including any necessary paperwork, contracts, or forms. Request them to return a signed copy of the retainer agreement and any other required documentation.] If you have any questions or need further clarification regarding this matter, please do not hesitate to contact me at [phone number] or via email at [email address]. We greatly value your expertise and look forward to the possibility of working together to achieve a successful outcome. Thank you for considering our request. Sincerely, [Your Name] [Your Title/Organization]