CANCEL she meet with an accident. She is replaced with Lloyd Pye and Domenico Rossi.

In 1994 Janet became involved in the crop circle phenomenon, after visiting a formation near Assen (in the north of the Netherlands), not far from where she lived at that time. From 1995 onward, she spent all her summer vacations in South England, the 'cradle' of the phenomenon. She visited and examined all the formations that appeared while she was there: hundreds of them. Of all the formations that she examined over the years (in England, the Netherlands and Germany) she mainly focussed on taking samples for biophysical research, taking photographs, and mapping out anomalies: strange things such as the presence of anomalous substances, and bent, twisted or torn off stems and seed heads.

She worked with Bert Janssen producing three crop circle video documentaries. In 1996 "Crop Circles, What On Earth Is Going On?" appeared. In 1998 "Crop Circles, The Research" (with an update in 2000), and in 2001 "Contact" was launched, which won an EBE-Award as best ufo-related video documentary during the conference and film festival at Laughlin, Nevada (USA).

In 2000 her first book "Crop Circles, A Worldwide Mystery" was published. It gave a colourful impression of the many facets of the crop circle phenomenon.

She participated in the production of "The Silbury Hole Enigma" (2001), another video documentary of Bert Janssen.

In the summer of 2002, Janet participated in a research project set up by the University of Utrecht (the Netherlands), examining newly formed crop formations by means of infra-red thermografy.

Also in 2002, she won the Frontier Award - together with fellow researcher Bert Janssen - for her work in the frontier sciences in the Netherlands. In 2004 she was nominated once again for this award.

In November 2007 her next book appeared: "Crop Circles - The Most Enchanting Ever" (Benign Publishers). It is the first book in a series of eight about the crop circle phenomenon. Part 2: "Crop Circles - Scientific Evidence" was published in May 2009. Her next book "Crop Circles - Message and Meaning" will be published by the end of 2010. Furthermore she is chairperson of the DCCCS (Dutch Centre for Crop Circle Studies).

For several years now she has been giving lectures in her own country and abroad about the crop circle phenomenon, she gives crop circle workshops in which she focuses on the interaction between the circles and the human mind, and she organises tours to the crop circles in South England.