 // MARK: - Utility
 
     func mergeImages(images: [UIImage!], toImageWithSize size: CGSize, andOffset offset: CGFloat) -> UIImage! {
-        UIGraphicsBeginImageContext(size)
-        var idxDec: CGFloat = CGFloat(images.count)
+        UIGraphicsBeginImageContextWithOptions(size, false, 2.0)
+
+        var idxDec: CGFloat = CGFloat(images.count - 1)
         var idxInc: CGFloat = 0
         for img in images.reverse() {
-            let newOrigin = CGPoint(x: idxDec * offset, y: idxInc * offset)
-            let newWidth = size.width - (offset * 2 * idxDec)
+            let newOrigin = CGPoint(x: idxDec * offset, y: idxInc * offset + 0.5)
+            let newWidth = size.width - (offset * 2 * idxDec) - 0.5
             let newSize = CGSize(
                 width: newWidth,
                 height: newWidth
             )
-            img.drawInRect(CGRect(origin: newOrigin, size: newSize))
+            let rect = CGRect(origin: newOrigin, size: newSize)
+            img.drawInRect(rect)
+
+            let context = UIGraphicsGetCurrentContext();
+            CGContextSetShouldAntialias(context, false)
+            CGContextSetStrokeColorWithColor(context, UIColor.whiteColor().CGColor)
+            CGContextStrokeRectWithWidth(context, rect, 0.5)
+            CGContextSetShouldAntialias(context, true)
             idxInc++
             idxDec--
         }

    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCellWithIdentifier(albumCellIdentifier, forIndexPath: indexPath) as UITableViewCell

        // Configure the cell...
        var localizedTitle: String
        if indexPath.row == 0 {
            localizedTitle = NSLocalizedString("Camera Roll", comment: "")
        } else {
            let collection: PHAssetCollection! = self.collectionsFetchResult[indexPath.row - 1] as PHAssetCollection
            localizedTitle = collection.localizedTitle
        }
        cell.textLabel?.text = localizedTitle
        cell.accessoryType = UITableViewCellAccessoryType.DisclosureIndicator


        return mergedImage
    }

}
