Investigation and research agency for private business, process serving service for bailiffs in Luxemburg

Your private detective firm for searching people, morality investigations and youth delinquency detection in Luxemburg

Investigation agency specialized on private research in Luxembourg

For more than 35 years, the private detective firm Dol-Dek D’Olisy International Investigation Worldwide  performs for you various investigations and research missions (follow the link http://www.dol-dek.lu/fre/investigation-recherche) in Luxembourg. Specialize in private research; our investigation agency intervenes on the whole territory of Luxemburg and the bigger Region: our detectives speak French, Luxembourgish, English and German.

Dol-Dek D’Olisy International Investigation Worldwide will issue you detailed mission certificates and reports for your research request for people and heirs, investigating on ethics and minors, asset search

All of our reports and evidence are subject to our security policy for confidential data and are protected on our secure servers.

Our firm also offers you its services on process serving (follow the link http://www.doldek.lu/fre/process-serving) for the transmission of official documents to Luxembourg: judicial injunctions, court orders, requests of divorce,…

Take advantage of our experience and our know-how on investigation and research in Luxembourg by contacting us on + 352 26 61 56 33, or contact us by email

An active network member from a global investigation agency for an assured international presence

Take advantage of our global network on private detectives for your investigation requests abroad

Our investigation agency Dol-Dek D’Olisy International Investigation Worldwide is a member of various global organizations dedicated to private research:

– WAPI (World Association of Professional Investigators),

– WAD (World Association of Detectives),

– Serve Now : the Trusted Network of Process Servers,

– CLC  (Luxembourg’s Trade Confederation)

An active member of the first national Luxembourg’s detective network, our investigation firm Dol-Dek D’Olisy International Investigation Worldwide ensures all your missions in English, Luxembourgish, French and German.

Do you wish to learn more about our private detective firm in Luxembourg? Make an appointment with our team at + 352 26 61 56 33, or contact us