Linked tables return more than one row

Hello people. This is my first post on Dev Shed, I hope someone can help me out.

My problem is this ....

I have a query that searches a linked table with start and end dates for an event linked by the event's ID. My problem is, if the where clause finds multiple matches in the date range table it returns the event in multiple rows.

The query is listed below. Forgive me if it's a bit clumbsy, I'm not what you'de call "well versed in SQL" and I'm pretty much flying by the seat of my pants until I get some time to learn how to do things properly.

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SELECT
event.*, dates.*,
(SELECT tblTown.TownName FROM tblTown WHERE event.TownID = tblTown.TownID) AS TownName,
(SELECT tblEventCategory.CategoryName FROM tblEventCategory WHERE event.CategoryID = tblEventCategory.CategoryID) AS CategoryName

FROM
tblEvent event,
tblEventDates dates

WHERE
(event.CategoryID > @locCategoryLow AND event.CategoryID < @locCategoryHigh) AND
(event.TownID > @locTownLow AND event.TownID < @locTownHigh) AND
(event.EventTitle LIKE @locKeyword OR event.[Description] LIKE @locKeyword OR event.VenueName LIKE @locKeyword OR event.AdditionalDetails LIKE @locKeyword) AND
(event.EventID = dates.EventID AND (DATEADD(d,-20,dates.StartDate) <= @SearchDate AND DATEADD(d,+20,dates.EndDate) >= @SearchDate))

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The last part of the WHERE clause is the secret (I think).

Any help greatly appreciated.

Thanks in advance
webBear1000